strange comparison result with 'is'
Hi all, This is quite strange when I used the Python shell with IDLE: x = [] id(getattr(x, 'pop')) == id(x.pop) True getattr(x, 'pop') is x.pop False I suppose since the two things have the same id, the 'is'-test should give a True value, but I get a False value. Any particular reason for breaking this test? I am quite confused as I show this before a large audience only to find the result denies my prediction. The python version is 3.2.2; I am not sure about other versions. Regards, Yingjie-- http://mail.python.org/mailman/listinfo/python-list
Message could not be delivered
The original message was received at Mon, 17 Oct 2011 12:13:39 +0300 from python.org [153.233.80.188] - The following addresses had permanent fatal errors - python-list@python.org - Transcript of session follows - while talking to python.org.: MAIL From:Automatic Email Delivery Software nore...@python.org 501 Automatic Email Delivery Software nore...@python.org... Refused ÿþS m a l l B u s i n e s s S e r v e r h a s r e m o v e d p o t e n t i a l l y u n s a f e e - m a i l a t t a c h m e n t ( s ) f r o m t h i s m e s s a g e : m e s s a g e . p i f B e c a u s e c o m p u t e r v i r u s e s a r e c o m m o n l y s p r e a d t h r o u g h f i l e s a t t a c h e d t o e - m a i l m e s s a g e s , c e r t a i n t y p e s o f f i l e s w i l l n o t b e d e l i v e r e d t o y o u r m a i l b o x . F o r m o r e i n f o r m a t i o n , c o n t a c t t h e p e r s o n r e s p o n s i b l e f o r y o u r n e t w o r k . -- http://mail.python.org/mailman/listinfo/python-list
Re: strange comparison result with 'is'
Yingjie Lan wrote: This is quite strange when I used the Python shell with IDLE: x = [] id(getattr(x, 'pop')) == id(x.pop) True getattr(x, 'pop') is x.pop False I suppose since the two things have the same id, the 'is'-test should give a True value, but I get a False value. Any particular reason for breaking this test? I am quite confused as I show this before a large audience only to find the result denies my prediction. The python version is 3.2.2; I am not sure about other versions. The getattr() call is just a distraction. Every x.pop attribute access creates a new method object. In the case of x.pop is x.pop False they have to reside in memory simultaneously while in the expression id(x.pop) == id(x.pop) True a list.pop method object is created, its id() is taken (which is actually its address) and then the method object is released so that its memory address can be reused for the second x.pop. So in the latter case the two method objects can (and do) share the same address because they don't need to exist at the same time. -- http://mail.python.org/mailman/listinfo/python-list
Re: strange comparison result with 'is'
On 10/17/2011 4:42 AM, Yingjie Lan wrote: Hi all, This is quite strange when I used the Python shell with IDLE: Nothing to do with IDLE x = [] id(getattr(x, 'pop')) == id(x.pop) True getattr(x, 'pop') is x.pop False I suppose since the two things have the same id, the 'is'-test should give a True value, but I get a False value. id and is are notorious for confusing beginners. You actually created 4 bound method objects -- but not all at the same time. IDs only only unique among simultaneously existing objects. It is an accident of the CPython implementation that two of them have the same id, even though they are different objects. The second line is the correct one. Any particular reason for breaking this test? I am quite confused as I show this before a large audience only to find the result denies my prediction. Don't show this sort of thing. Name your objects so they do not get garbage collected in the middle of any demonstration. -- Terry Jan Reedy -- http://mail.python.org/mailman/listinfo/python-list
anagonda sucks )))))))))))))))
http://123maza.com/48/silver424/ -- http://mail.python.org/mailman/listinfo/python-list
Re: How do I get curses to work in Python 3.2 on win-64?
On 16 Okt, 06:59, Christoph Gohlke cjgoh...@gmail.com wrote: On Oct 15, 1:13 pm, Jan Sundström sundstro...@gmail.com wrote: `import curses` should work. What exactly is the error message? Does `import curses` work outside your program/program directory? The curses package is part of the standard library and usually installed in Python32\Lib\curses. On Windows the _curses.pyd files is missing in the standard distribution. curses-2.2.win-amd64-py3.2.exe installs the missing _curses.pyd file into Lib/site-packages. Thanks for the tip to check in what library it works, that set me on track tofind a silly mistake that I had done. Now everything works fine. But, how come that the Windows distribution for Python doesn't include the _curses.pyd file? -- http://mail.python.org/mailman/listinfo/python-list
Re: Loop through a dict changing keys
On Oct 15, 5:53 pm, PoD p...@internode.on.net wrote:
data = {
'Mobile': 'string',
'context': 'malicious code',
'order': '7',
'time': 'True'}
types={'Mobile':str,'context':str,'order':int,'time':bool}
for k,v in data.items():
data[k] = types[k](v)
Thanks for the tip, I didn't know you could do that. I ended up
filtering the values the bulky way, but it gives me total control over
what internet users feed my program.
-- Gnarlie
--
http://mail.python.org/mailman/listinfo/python-list
Re: Loop through a dict changing keys
On Mon, Oct 17, 2011 at 5:20 AM, Gnarlodious gnarlodi...@gmail.com wrote:
On Oct 15, 5:53 pm, PoD p...@internode.on.net wrote:
types={'Mobile':str,'context':str,'order':int,'time':bool}
for k,v in data.items():
data[k] = types[k](v)
Thanks for the tip, I didn't know you could do that. I ended up
filtering the values the bulky way, but it gives me total control over
what internet users feed my program.
It should be noted that this will not in any way sanitize
data['context']. It calls the str() function on it, thus ensuring that
it's a string, but that's all. If you're needing to deal with
(potentially) malicious input, you'll want to swap in a function that
escapes it in some way (if it's going into a database, your database
engine will usually provide a 'quote' or 'escape' function; if it's to
go into a web page, I think cgi.escape is what you want).
ChrisA
--
http://mail.python.org/mailman/listinfo/python-list
Re: Equal sets with unequal print and str() representations
On Sun, Oct 16, 2011 at 05:52:03PM -0600, Ganesh Gopalakrishnan wrote:
This probably is known, but a potential pitfall (was, for me)
nevertheless. I suspect it is due to hash collisions between 's3'
and 's13' in this case? It happens only rarely, depending on the
contents of the set.
S1 = {'s8', 's3', 's2', 's0', 's7', 's6', 's4', 's13', 's14'}
S1 = {'s8', 's3', 's2', 's0', 's7', 's6', 's4', 's13', 's14'}
S2 = {'s8', 's13', 's2', 's0', 's7', 's6', 's4', 's3', 's14'}
S2 = {'s8', 's13', 's2', 's0', 's7', 's6', 's4', 's3', 's14'}
S1
S1
{'s8', 's13', 's2', 's0', 's7', 's6', 's4', 's3', 's14'}
S2
S2
{'s8', 's3', 's2', 's0', 's7', 's6', 's4', 's13', 's14'}
S1==S2
S1==S2
True
str(S1)
str(S1)
{'s8', 's13', 's2', 's0', 's7', 's6', 's4', 's3', 's14'}
str(S2)
str(S2)
{'s8', 's3', 's2', 's0', 's7', 's6', 's4', 's13', 's14'}
str(S1) == str(S2)
False
This is because sets do not preserve order.
--
http://mail.python.org/mailman/listinfo/python-list
Re: How do I get curses to work in Python 3.2 on win-64?
On Sun, Oct 16, 2011 at 11:16, Jan Sundström sundstro...@gmail.com wrote: On 16 Okt, 06:59, Christoph Gohlke cjgoh...@gmail.com wrote: On Oct 15, 1:13 pm, Jan Sundström sundstro...@gmail.com wrote: `import curses` should work. What exactly is the error message? Does `import curses` work outside your program/program directory? The curses package is part of the standard library and usually installed in Python32\Lib\curses. On Windows the _curses.pyd files is missing in the standard distribution. curses-2.2.win-amd64-py3.2.exe installs the missing _curses.pyd file into Lib/site-packages. Thanks for the tip to check in what library it works, that set me on track tofind a silly mistake that I had done. Now everything works fine. But, how come that the Windows distribution for Python doesn't include the _curses.pyd file? It's not a standard library module on Windows. The curses Christoph mentioned is built on the PDCurses library, which is an external project. -- http://mail.python.org/mailman/listinfo/python-list
Re: Loop through a dict changing keys
Uh, sounds reasonable, if one loops over an index variable that could be altered during the loop execution then the loop may not end as expected. -- http://mail.python.org/mailman/listinfo/python-list
Re: strange comparison result with 'is'
On 10/17/2011 5:19 AM, Peter Otten wrote: The getattr() call is just a distraction. Every x.pop attribute access creates a new method object. In the case of x.pop is x.pop False they have to reside in memory simultaneously while in the expression id(x.pop) == id(x.pop) True a list.pop method object is created, its id() is taken (which is actually its address) and then the method object is released so that its memory address can be reused for the second x.pop. So in the latter case the two method objects can (and do) share the same address because they don't need to exist at the same time. This has come up enough that I opened http://bugs.python.org/issue13203 == Newbies too often do something like (3.2.2, ) id(getattr(x, 'pop')) == id(x.pop) True and get confused by the (invalid) result, whereas a,b=getattr(x, 'pop'),x.pop id(a)==id(b) False works properly. I think we should add a sentence or two or three to the id() doc, such as Since a newly created argument object is either destroyed or becomes inaccessible before the function returns, *id(obj)* is only useful and valid if *obj* exists prior to the call and therefore after its return. The value of an expression such as *id(666)== id(667)* is arbitrary and meaningless. The id of the first int object might or might not be reused for the second one. With something like this added, we could just say 'read the id() doc'. -- Terry Jan Reedy -- http://mail.python.org/mailman/listinfo/python-list
Re: Loop through a dict changing keys
On Mon, Oct 17, 2011 at 10:21 AM, 8 dihedral dihedral88...@googlemail.com wrote: Uh, sounds reasonable, if one loops over an index variable that could be altered during the loop execution then the loop may not end as expected. From the docs: Iterating views while adding or deleting entries in the dictionary may raise a RuntimeError or fail to iterate over all entries. Changing the values of existing entries while iterating is considered to be safe, though. -- http://mail.python.org/mailman/listinfo/python-list
Re: python.org appears to be down
http://www.isup.me/python.org ;) -- http://mail.python.org/mailman/listinfo/python-list
Re: Loop through a dict changing keys
On Sun, 16 Oct 2011 11:20:49 -0700, Gnarlodious wrote:
On Oct 15, 5:53 pm, PoD p...@internode.on.net wrote:
data = {
'Mobile': 'string',
'context': 'malicious code',
'order': '7',
'time': 'True'}
types={'Mobile':str,'context':str,'order':int,'time':bool}
for k,v in data.items():
data[k] = types[k](v)
Thanks for the tip, I didn't know you could do that. I ended up
filtering the values the bulky way,
What is the bulky way?
but it gives me total control over
what internet users feed my program.
Why does this not fill me with confidence?
As Jon Clements has already spotted a major bug in the above: using bool
as shown is not correct. Furthermore, converting 'malicious code' into
a string does nothing, since it is already a string.
Gnarlodious, it is good that you are concerned about code injection
attacks, but defending against them is not simple or easy. I don't intend
to sound condescending, but when your response to being shown a simple
filter that maps keys to types is to say I didn't know you could do
that, that's a good warning that your Python experience may not be quite
up to the job of out-guessing the sort of obscure tricks hostile
attackers may use.
If you think that defending against malicious code is simple, you should
read this blob post:
http://tav.espians.com/a-challenge-to-break-python-security.html
and the thread which inspired it:
http://mail.python.org/pipermail/python-dev/2009-February/086401.html
How do you sanitize user input?
--
Steven
--
http://mail.python.org/mailman/listinfo/python-list
type vs. module (part2)
In the following t,t1 are the result of built-in call type() -- the form that takes three arguments. Therefore they are classes. Consider the following output: print type(t) class 'a.b.f.F' print id(t) 1234567 print t.__module__ a.b.t.d print type(t1) class 'a.b.f.F' print id(t1) 1234568 print t1.__module__ a.b.t.d I now have two questions: How does Python allow two classes of the same type as evidenced by identical ``print type(class)' output and different id outputs? Also, which module is t,t1 actually in? Is it a.b.f? Or is it a.b.t.d. I am totally confused. -- http://mail.python.org/mailman/listinfo/python-list
Re: Loop through a dict changing keys
On Sun, 16 Oct 2011 00:18:40 -0700, Jon Clements wrote:
On Oct 16, 12:53 am, PoD p...@internode.on.net wrote:
On Sat, 15 Oct 2011 11:00:17 -0700, Gnarlodious wrote:
What is the best way (Python 3) to loop through dict keys, examine
the string, change them if needed, and save the changes to the same
dict?
So for input like this:
{'Mobile': 'string', 'context': 'malicious code', 'order': '7',
'time': 'True'}
I want to booleanize 'True', turn '7' into an integer, escape
'malicious code', and ignore 'string'.
Any elegant Python way to do this?
-- Gnarlie
How about
data = {
'Mobile': 'string',
'context': 'malicious code',
'order': '7',
'time': 'True'}
types={'Mobile':str,'context':str,'order':int,'time':bool}
for k,v in data.items():
data[k] = types[k](v)
Bit of nit-picking, but:
bool('True')
True
bool('False')
True
bool('')
False
Oops :) Brain fade.
--
http://mail.python.org/mailman/listinfo/python-list
Re: Equal sets with unequal print and str() representations
Ganesh Gopalakrishnan gan...@cs.utah.edu writes:
This probably is known, but a potential pitfall (was, for me) nevertheless.
I suspect it is due to hash collisions between 's3' and 's13' in this
case?
What is the actual problem? What behaviour is occurring that doesn't
match your expectation?
S1==S2
S1==S2
True
str(S1)
str(S1)
{'s8', 's13', 's2', 's0', 's7', 's6', 's4', 's3', 's14'}
str(S2)
str(S2)
{'s8', 's3', 's2', 's0', 's7', 's6', 's4', 's13', 's14'}
str(S1) == str(S2)
False
Right, that's all correct (though I don't know why some of your
expressions are being shown twice). A deliberate property of a set is
that its items are unordered.
URL:http://docs.python.org/library/stdtypes.html#set
Since sets are unordered, the string representation may show the items
in an arbitrary and unpredictable sequence. Don't write any code that
depends on a predictable sequence of retrieval from an unordered
collection.
So what did you expect instead, and what supports that expectation?
--
\ “When we pray to God we must be seeking nothing — nothing.” |
`\ —Saint Francis of Assisi |
_o__) |
Ben Finney
--
http://mail.python.org/mailman/listinfo/python-list
Re: Loop through a dict changing keys
On Oct 16, 5:25 pm, Steven D'Aprano steve
+comp.lang.pyt...@pearwood.info wrote:
How do you sanitize user input?
Thanks for your concern. This is what I now have, which merely expands
each value into its usable type (unquotes them):
# filter each value
try:
var=int(var)
except ValueError:
if var in ('False', 'True'):
var=eval(var) # extract booleans
else:
var=cgi.escape(var)
This is really no filtering at all, since all CGI variables are
written to a dictionary without checking. However, if there is no
receiver for the value I should be safe, right?
I am also trapping some input at mod_wsgi, like php query strings. And
that IP address gets quarantined. If you can suggest what attack words
to block I'll thank you for it.
I also have a system to reject variables that are not in a list, but
waiting to see what the logfiles show before deploying it.
-- Gnarlie
http://Gnarlodious.com
--
http://mail.python.org/mailman/listinfo/python-list
Problem with a wx notebook
Hi there, I've created a wx NoteBook in wich I set multiples panels in wich I set one or more sizers. But nothing displays in the notebook, everything is outside. I've been searching an answer for 2 days . Can you help me plz ? Here is my code(with only one panel, to sum up the code) : class StreamingActivationDialog(wx.Dialog): def __init__(self, *args, **kwds): # begin wxGlade: StreamingActivationDialog.__init__ kwds[style] = wx.DEFAULT_DIALOG_STYLE wx.Dialog.__init__(self, *args, **kwds) self.bitmap_1_copy = wx.StaticBitmap(self, -1, wx.Bitmap(img\ \logo.png, wx.BITMAP_TYPE_ANY)) self.labelDnD = wx.StaticText(self, -1, Si vous avez déjà un fichier d'activation, faite le glisser dans cette fenetre) self.keyBitmap = wx.StaticBitmap(self, -1, wx.Bitmap(img\ \key.bmp, wx.BITMAP_TYPE_ANY)) self.conclude = wx.StaticText(self, -1, _(test), style=wx.ALIGN_CENTRE) ### Panel ### self.intro3_label = wx.StaticText(self, -1, Envoyez un mail à \nactivat...@monmail.com\ncontenant le code :,style=wx.ALIGN_CENTRE) self.activationCode_label= wx.StaticText(self, -1, 123456789, style=wx.TE_READONLY) self.copy2_Button = wx.Button(self, -1, Copier dans le presse- papier) self.copy2_Button.Bind(wx.EVT_BUTTON, PanelMail.onCopy) ## self.note = wx.Notebook(self, wx.ID_ANY, style=wx.BK_LEFT, size=wx.Size(100, 341)) self.page3 = wx.Panel(self.note) imagelist = wx.ImageList(94, 94) bitmap1 = wx.Bitmap(img\\a.bmp, wx.BITMAP_TYPE_BMP ) imagelist.Add(bitmap1) self.note.AssignImageList(imagelist) self.__set_properties() self.__do_layout() # end wxGlade def __set_properties(self): # begin wxGlade: StreamingActivationDialog.__set_properties self.SetTitle(_(Activation de FlashProcess)) self.SetBackgroundColour(wx.Colour(255, 255, 255)) #self.linkProblem.SetForegroundColour(wx.Colour(0, 0, 0)) # end wxGlade def __do_layout(self): # begin wxGlade: StreamingActivationDialog.__do_layout self.grid_sizer_1 = wx.FlexGridSizer(6, 1, 0, 0) self.grid_sizer_2 = wx.FlexGridSizer(1, 2, 0, 30) self.grid_sizer_1.Add(self.bitmap_1_copy, 0, wx.TOP|wx.BOTTOM| wx.EXPAND, 10) ### Page 3 ### sizer = wx.BoxSizer(wx.VERTICAL) sizer.Add(self.intro3_label, 0, wx.BOTTOM|wx.ALIGN_CENTER, 5) sizer.Add(self.activationCode_label, 0, wx.BOTTOM| wx.ALIGN_CENTER, 20) sizer.Add(self.copy2_Button, 0, wx.ALIGN_CENTER, 20) self.page3.SetSizer(sizer) sizer.Fit(self.page3) ## self.note.AddPage(self.page3, , False, 0) self.Bind(wx.EVT_TOOLBOOK_PAGE_CHANGED, self.OnPageChanged) self.Bind(wx.EVT_TOOLBOOK_PAGE_CHANGING, self.OnPageChanging) self.grid_sizer_1.Add(self.note, 0, wx.EXPAND, 20) self.grid_sizer_1.Add(self.labelDnD, 0, wx.TOP| wx.ALIGN_CENTER_HORIZONTAL, 20) self.grid_sizer_2.Add(self.keyBitmap, 0, wx.LEFT, 10) self.grid_sizer_2.Add(self.labelDnD, 0, wx.LEFT, 20) self.grid_sizer_1.Add(self.grid_sizer_2, 0, wx.EXPAND, 20) self.grid_sizer_1.Add(self.conclude, 0, wx.TOP| wx.ALIGN_CENTER_HORIZONTAL, 20) self.SetSizer(self.grid_sizer_1) self.grid_sizer_1.Fit(self) self.Layout() # end wxGlade def OnPageChanged(self, event): event.Skip() def OnPageChanging(self, event): event.Skip() -- http://mail.python.org/mailman/listinfo/python-list
Re: Loop through a dict changing keys
On Sun, 16 Oct 2011 17:41:55 -0700, Gnarlodious wrote:
On Oct 16, 5:25 pm, Steven D'Aprano steve
+comp.lang.pyt...@pearwood.info wrote:
How do you sanitize user input?
Thanks for your concern. This is what I now have, which merely expands
each value into its usable type (unquotes them):
# filter each value
try:
var=int(var)
Should be safe, although I suppose if an attacker passed (say) five
hundred thousand 9 digits, it might take int() a while to generate the
long int. Instant DOS attack.
A blunt object fix for that is to limit the user input to (say) 500
characters, which should be long enough for any legitimate input string.
But that will depend on your application.
except ValueError:
if var in ('False', 'True'):
var=eval(var) # extract booleans
Well, that's safe, but slow, and it might encourage some future
maintainer to use eval in less safe ways. I'd prefer:
try:
{'True': True, 'False': False}[var]
except KeyError:
pass # try something else
(To be a little more user-friendly, use var.strip().title() instead of
just var.)
else:
var=cgi.escape(var)
This is really no filtering at all, since all CGI variables are written
to a dictionary without checking. However, if there is no receiver for
the value I should be safe, right?
What do you mean no receiver?
If you mean that you don't pass the values to eval, exec, use them in SQL
queries, call external shell scripts, etc., then that seems safe to me.
But I'm hardly an expert on security, so don't take my word on it. And it
depends on what you end up doing in the CGI script.
I am also trapping some input at mod_wsgi, like php query strings. And
that IP address gets quarantined. If you can suggest what attack words
to block I'll thank you for it.
That's the wrong approach. Don't block words in a blacklist. Block
everything that doesn't appear in a whitelist. Otherwise you're
vulnerable to a blackhat coming up with an attack word that you never
thought of. There's one of you and twenty million of them. Guess who has
the advantage?
--
Steven
--
http://mail.python.org/mailman/listinfo/python-list
define module in non-standard location?
Normally if one has a code set under a directory top_level like this: top_level: __main__.py a __init__.py b __init__.py then this directory structure is naturally satisfies this line in __main__.py: import a.b But support, for some stupid reason --- say a.b is user defined code --- that I want to locate modules a and a.b somewhere else under another directory other_top_level. What would the line import a.b in __main__,py be replaced by? Thank you -- http://mail.python.org/mailman/listinfo/python-list
Re: type vs. module (part2)
On Oct 17, 9:11 am, Shane gshanemil...@verizon.net wrote: I now have two questions: How does Python allow two classes of the same type as evidenced by identical ``print type(class)' output and different id outputs? You are looking at the id of two _instances_ of the class, not of the class itself. class Example(object): ... pass ... e1, e2 = Example(), Example() type(e1), type(e2) (class '__main__.Example', class '__main__.Example') id(type(e1)), id(type(e2)) (20882000, 20882000) id(e1), id(e2) (25931760, 25968816) Also, which module is t,t1 actually in? Is it a.b.f? Or is it a.b.t.d. Which module did you declare them in? What makes you think they're defined somewhere other than what .__module__ is telling you? My guess is your class is in a.b.f, your instances are created in a.b.t.d, and you've demonstrated very powerfully the value of meaningful names in code. I am totally confused. And you have the source code. Imagine how we feel. -- http://mail.python.org/mailman/listinfo/python-list
Re: type vs. module (part2)
On Sun, 16 Oct 2011 16:11:18 -0700, Shane wrote:
In the following t,t1 are the result of built-in call type() -- the form
that takes three arguments.
Are you sure about that? Because my explanation below will depend
entirely on this alleged fact: that t and t1 themselves are classes, not
instances.
To be sure (well, *nearly* sure), please print t and t1 and see whether
you get something like:
print t
= class 'blah-blah-blah'
or
print t
= blah-blah-blah object at 0x9c5c64c
Therefore they are classes. Consider the following output:
print type(t)
class 'a.b.f.F'
print id(t)
1234567
print t.__module__
a.b.t.d
print type(t1)
class 'a.b.f.F'
print id(t1)
1234568
print t1.__module__
a.b.t.d
I now have two questions: How does Python allow two classes of the same
type as evidenced by identical ``print type(class)' output and
different id outputs?
When you use the class statement, you end up with one class with one
name, but that's not a hard rule about classes. It's just a convention.
You can have multiple identical classes so long as you assign them to
different names. For example:
class Spam: # bind a class Spam to the global name Spam
... pass
...
Ham = Spam # bind the class object to another global name
class Spam: # and re-use the old name for a new class
... x = 1
...
print Ham, Spam
__main__.Spam __main__.Spam
What's going on here? The secret is that classes (and functions!)
generally have *two* names. The first name is their internal name, the
name they report when you print them. The second is the name of the
variable (or variables!) they are bound to. Nobody says that they MUST
match, although they often do.
When you use the class statement, Python's interpreter ensures that you
start off with the two names matching, but as you can see from above,
they don't necessarily stay matching. But the type() function doesn't
enforce that:
brie = type('cheese', (), {})
cheddar = type('cheese', (), {})
brie is cheddar
False
print brie, cheddar
class '__main__.cheese' class '__main__.cheese'
Both brie and cheddar know their own name as cheese, but the names you
use to refer to them are different.
So, bringing this back to your examples...
Both t and t1 are classes, both know their internal name as F, but they
are different classes, as seen by the fact that their IDs are different.
Also, which module is t,t1 actually in? Is it a.b.f? Or is it
a.b.t.d.
Since they are two independent classes, it could easily be both, one for
each.
--
Steven
--
http://mail.python.org/mailman/listinfo/python-list
Re: define module in non-standard location?
On Sun, 16 Oct 2011 19:43:20 -0700, Shane wrote: Normally if one has a code set under a directory top_level like this: top_level: __main__.py a __init__.py b __init__.py then this directory structure is naturally satisfies this line in __main__.py: import a.b But support, for some stupid reason --- say a.b is user defined code --- that I want to locate modules a and a.b somewhere else under another directory other_top_level. You mean like this? top_level/ __main__.py other_top_level/ a/ __init__.py b/ __init__.py What would the line import a.b in __main__,py be replaced by? Make sure other_top_level is in your PYTHONPATH, and then just use import a.b as before. Either use your shell to do something like this: export PYTHONPATH=other_top_level:$PYTHONPATH (that's using bash syntax, other shells may need something different), or in __main__.py do this: import sys sys.path.append(other_top_level) -- Steven -- http://mail.python.org/mailman/listinfo/python-list
Re: type vs. module (part2)
On Mon, 17 Oct 2011 06:32:00 +, Steven D'Aprano wrote: So, bringing this back to your examples... Both t and t1 are classes, both know their internal name as F, but they are different classes, as seen by the fact that their IDs are different. Oops, no, sorry, a mistake... assuming you are correct that both t and t1 are classes, we don't have enough information to know what they believe they are called. (Printing t and t1 should tell you.) What we know is that their *metaclass* (the class of a class) knows itself as F. -- Steven -- http://mail.python.org/mailman/listinfo/python-list
Re: define module in non-standard location?
On Oct 16, 11:55 pm, Steven D'Aprano steve +comp.lang.pyt...@pearwood.info wrote: On Sun, 16 Oct 2011 19:43:20 -0700, Shane wrote: Normally if one has a code set under a directory top_level like this: top_level: __main__.py a __init__.py b __init__.py then this directory structure is naturally satisfies this line in __main__.py: import a.b But support, for some stupid reason --- say a.b is user defined code --- that I want to locate modules a and a.b somewhere else under another directory other_top_level. You mean like this? top_level/ __main__.py other_top_level/ a/ __init__.py b/ __init__.py What would the line import a.b in __main__,py be replaced by? Make sure other_top_level is in your PYTHONPATH, and then just use import a.b as before. Either use your shell to do something like this: export PYTHONPATH=other_top_level:$PYTHONPATH (that's using bash syntax, other shells may need something different), or in __main__.py do this: import sys sys.path.append(other_top_level) -- Steven Cheers. Thanks -- http://mail.python.org/mailman/listinfo/python-list
Re: Benefit and belief
DevPlayer wrote: I still assert that contradiction is caused by narrow perspective. By that I mean: just because an objects scope may not see a certain condition, doesn't mean that condition is non-existant. Groetjes Albert wrote: This is a far cry from the bible stating that someone is his own grand father. Or going to great length to prove that Jezus (through Jozef) is a descendant of David. Then declaring it a dogma that Jozef has nothing to do with it. Do you not see? For ... One man's garbage is another man's treasure. One man's delusion is another man's epiphany. One man's untruth is another man's belief. One man's thing to attack is another mans thing to shield and defend. One man's logical undenighable truth is another man's small part of a bigger picture. As has been said for example does 1+1 = 2. Only in one small persepective. Whaa? what wack job says stuff like that? 1+1 = 10. In the bigger picture there is more then one numberic base besides decimal, such as binary. Or then one might say there are only 10 integer numbers from 0 to 9 or from 1 to 10 if you like. Again in the limited view, true, but in the larger view no. The Elucid numbering scale is not the only numbering scale ever invented, or needed for that matter. http://en.wikipedia.org/wiki/Euclidean_geometry Euclid's axioms seemed so intuitively obvious that any theorem proved from them was deemed true in an absolute, often metaphysical, sense. Today, however, many other self-consistent non-Euclidean geometries are known, the first ones having been discovered in the early 19th century. An implication of Einstein's theory of general relativity is that Euclidean space is a good approximation to the properties of physical space ... Groetjes Albert wrote: (It being ... well ... you know ...) Um... Huh? sorry didn't know what you meant. You got me on that one. Ellipses just put my brain into recursive mode. Groetjes Albert wrote: (I have this book, it is called the amusing bible with all flippant and contradictory stuff pointed out by a French 1930 communist. Cartoons too. ) I likely would find it very funny. Economic growth -- being exponential -- ultimately falters. How true indeed. -- http://mail.python.org/mailman/listinfo/python-list
Re: Language Enhancement Idea to help with multi-processing (your opinions please)
On Oct 14, 7:32 pm, alex23 wuwe...@gmail.com wrote: You can do this right now with Python 3.2+ and concurrent.futures: from concurrent.futures import ThreadPoolExecutor You may have finally sold me on struggling through the upgrade from Python 2.6! I've been doing reasonably well with the Multiprocessing module, but it looks like the syntax of ThreadPoolExecutor offers some significant improvements. Here's hoping that numpy, scipy, and matplotlib are all Python 3.x- compatible by now... -- http://mail.python.org/mailman/listinfo/python-list
Re: callling python function in c
Am 16.10.2011 10:03, schrieb masood shaik: I am trying to call python function from c code.The following program i got from the web source while i am trying to run this program it throws an segmentation fault. Try checking what functions returns instead of blindly using it. Use a debugger to find out where exactly it segfaults. Uli -- http://mail.python.org/mailman/listinfo/python-list
[OT] Re: Benefit and belief
On Mon, 17 Oct 2011 05:59:04 -0700, DevPlayer wrote:
As has been said for example does 1+1 = 2. Only in one small
persepective. Whaa? what wack job says stuff like that? 1+1 = 10. In the
bigger picture there is more then one numberic base besides decimal,
such as binary.
That is no more deep and meaningful than the fact that while some people
say one plus one equals two, others say eins und eins gleich zwei,
some say un et un fait deux and some say один и один дает два.
Regardless of whether you write two, zwei, два, δυο, 2 (in decimal), 10
(in binary), II (in Roman numerals) or even {0,1} using set theory
notation, the number remains the same, only the symbol we use to label it
is different.
Do not confuse the map for the territory.
--
Steven
--
http://mail.python.org/mailman/listinfo/python-list
Re: Benefit and belief
On Oct 17, 10:34 am, Steven D'Aprano wrote:
On Mon, 17 Oct 2011 05:59:04 -0700, DevPlayer wrote:
As has been said for example does 1+1 = 2. Only in one small
persepective. Whaa? what wack job says stuff like that? 1+1 = 10. In the
bigger picture there is more then one numberic base besides decimal,
such as binary.
That is no more deep and meaningful than the fact that while some people
say one plus one equals two, others say eins und eins gleich zwei,
some say un et un fait deux and some say один и один дает два.
Regardless of whether you write two, zwei, два, δυο, 2 (in decimal), 10
(in binary), II (in Roman numerals) or even {0,1} using set theory
notation, the number remains the same, only the symbol we use to label it
is different.
Do not confuse the map for the territory.
Steven
Good point. But I disagree:
The symbol is not only used to label it. The symbol is used to put it
in context in reference to something else. 2 is a quantity in
decimal, but in binary, 2 is not a quantity nor is 01+01==10 equal
to 2 from withIN the binary perspective. Those symantics are
symbolic of concepts which are being equated to quantities OUTSIDE of
the binary perspective. True binary states, True + True does not equal
two True, correct?
Programmers use binary math to -represent- quantity. Here you are
arranging syntax to change meaning -out of scope-. The original
machine language notation inventors could have said in binary there is
no 1+1 they could have said 1 Jumps 1 means A, or On repowers On
equals 5th gate in nand circuit.
To reitterate, I agree with you that it doesn't matter what symbology
you use if that symobology represents same-stateness -FROM a broader
perspective (i.e. scope). BUT in binary, in the narrow scope of binary
logic there is no 2. The available states are restrained to the
scope you place them, when WITHIN that scope. (using caps to try to be
clear and I don't intend to say you are wrong and I am right but to
say, I disagree because of this logic. Said differently I intend to
explain, not to demoralize or offend).
1+1=10 is being viewed as 2 because of a larger world view is being
used, a broader perspective. Using broader concepts of numbers and
math which is a superset of a strictly binary system and is also a
superset of a decimal only view. Remember a computer does not function
with concepts of 2 or a or 15. Computers function in ons and
offs and indeterminate states. The binary representation of 10 to
a computer does not mean 2. That quantity representation is
something the human applies to that state.
Perhaps a differant analogy made by someone else. Many years ago, I've
studied the The Fourth Dimension a book based mostly on math by
Rudy Rucker. There are a few books with that name but this one is
algra based. It attempts to teach the reader to be able to view 4
dimensional objects using 3 dimensional and even 2 dimensional
translations of mapped objects - with a 4 dimensional view.
There are two popular schools of thought on this attempt. 1. It's
impossible or us to concieve of a 4 dimentional space objects within
our 3 dimentional senses and perceptions. and 2. We can conceive with
our mind-s eye 4 dimensional objects much like we concieve of 2
dimentional objects (the plane) and even harder one dimensional
objects.
The author attempts to teach by first using an analogy. First he
clarifies that for his purposes of 4 dimensional space, that no
dimension axis in his math singularly represents time or anything
ephemeral like the supernatural or energy or such. Each fo the 4
dimensions represent an axis in a physical vector. He then creates a 3
dimensional man who lives in a 3 dimensional world. This 3d man sees
up, down, north, south, east, west. And he can see a plane or even a
line. But the 3d man does not see the 4th axis because he is not made
of that vector and does not therefore have sensory to perceive that
axis. The author then goes on to show a 2d man does not see the 3rd
axis and then better explains how the 1d man can only see in left or
right directions. Following that story further, keeping to certain
assumptions about 1d space, puts the man in a binary world view, where
there is no 2, much like a computer. there is not 2 there is only
10, which TO YOU is a 2. but to the 1d man and the computer is a 10.
Of course when you try to limit someone's view to make a point about a
limited view it sounds rediculas. Supposition is often that way after
all.
That is no more deep and meaningful than the fact that while some people
say one plus one equals two, others say eins und eins gleich zwei,
some say un et un fait deux and some say один и один дает два.
Regardless of whether you write two, zwei, два, δυο, 2 (in decimal), 10
(in binary), II (in Roman numerals) or even {0,1} using set theory
notation, the number remains the same, only the symbol we use to label it
is different.
Also here you are talking about syntax as if it were symantics or
Re: Loop through a dict changing keys
Steven: Thanks for those tips, I've implemented all of them. Also only allowing whitelisted variable names. Feeling much more confident. -- Gnarlie -- http://mail.python.org/mailman/listinfo/python-list
Re: Python hangs: Problem with wxPython, threading, pySerial, or events?
I just wanted to bump this back onto the list since I posted over the
weekend.
Thanks,
Ethan
On 10/15/2011 11:17 AM, Ethan Swint wrote:
Hi-
I'm experiencing crashes in my Win32 Python 2.7 application which
appear to be linked to pyzmq. At the moment, I can't even kill the
python.exe *32 process in the Windows Task Manager. I'm running the
script using Ipython by calling
C:\Python27\pythonw.exe
/python27/scripts/ipython-qtconsole-script.pyw -pylab
but I also experience similar behavior when running within Eclipse.
I've included an error message at the end which appears in the Windows
'cmd' window, but the message is not reflected in the pylab window.
My attached device is transmitting 160123480 and is
received correctly when I run the sample pyserial script
'wxTerminal.py'. In my application, however, the message appears to
get characters out of order or drop bytes.
If there's a better place to post or if you'd like more info, let me
know.
Thanks,
Ethan
--Serial Port Listening
Thread
def MotorRxThread(self):
Thread that handles the incoming traffic. Does buffer input and
generates an SerialRxEvent
while self.alive.isSet(): #loop while alive event is
true
text = self.serMotor.read(1) #read one, with timeout
if text:#check if not timeout
n = self.serMotor.inWaiting() #look if there is more to read
if n:
text = text + self.serMotor.read(n) #get it
#log to terminal
printstring = MotorRxThread:
for b in text:
printstring += str(ord(b)) +
print printstring
#pdb.set_trace()
if self.motorRx0.proc_string(text):
print Message: cmd: + str(self.motorRx0.cmd) + data:
+ str(self.motorRx0.data)
event = SerialRxSpeedEvent(self.GetId(), text)
self.GetEventHandler().AddPendingEvent(event)
-\Serial Port Listening
Thread
Thread
StartStop--
def StartMotorThread(self):
Start the receiver thread
self.motorThread = threading.Thread(target=self.MotorRxThread)
self.motorThread.setDaemon(1)
self.alive.set()
self.motorThread.start()
def StopMotorThread(self):
Stop the receiver thread, wait until it's finished.
if self.motorThread is not None:
self.alive.clear() #clear alive event for thread
self.motorThread.join() #wait until thread has finished
self.motorThread = None
self.serMotor.close() #close the serial port connection
\Thread
StartStop--
---Error message
ValueError: 'IDS|MSG' is not in list
([], ['IDS|MSG', '', '',
'{date:2011-10-15T10:24:27.231000,username:kernel,session:82906c8a-1235-44d0-b65d-
0882955305c1,msg_id:7cfcd155-bc05-4f47-9c39-094252223dab,msg_type:stream}',
'{date:2011-10-15T10:24:27.23100
0,username:kernel,session:82906c8a-1235-44d0-b65d-0882955305c1,msg_id:f4b88228-b353-4cfb-9bbe-ae524ee1ac38,
msg_type:stream}',
'{date:2011-10-15T10:24:00.774000,username:username,session:9f393860-c2ab-44e9-820d-8f
08ae35044e,msg_id:13a46e93-8da2-487b-ab12-6cae47b1ac34,msg_type:execute_request}',
'{date:2011-10-15T10:24:0
0.774000,username:username,session:9f393860-c2ab-44e9-820d-8f08ae35044e,msg_id:13a46e93-8da2-487b-ab12-6cae4
7b1ac34,msg_type:execute_request}', '{data:\\nMotorRxThread: 0
MotorRxThread: 4 ,name:stdout}'])
ERROR:root:Exception in I/O handler for fd zmq.core.socket.Socket
object at 0x03ADFCC0
Traceback (most recent call last):
File
C:\Python27\lib\site-packages\pyzmq-2.1.9-py2.7-win32.egg\zmq\eventloop\ioloop.py,
line 291, in start
self._handlers[fd](fd, events)
File
C:\Python27\lib\site-packages\pyzmq-2.1.9-py2.7-win32.egg\zmq\eventloop\stack_context.py,
line 133, in wrapped
callback(*args, **kwargs)
File C:\Python27\lib\site-packages\IPython\zmq\kernelmanager.py,
line 448, in _handle_events
self._handle_recv()
File C:\Python27\lib\site-packages\IPython\zmq\kernelmanager.py,
line 458, in _handle_recv
ident,msg = self.session.recv(self.socket)
File C:\Python27\lib\site-packages\IPython\zmq\session.py, line
585, in recv
raise e
ValueError: No JSON object could be decoded
ERROR:root:Exception in I/O handler for fd zmq.core.socket.Socket
object at 0x03ADFCC0
Traceback (most recent call last):
File
C:\Python27\lib\site-packages\pyzmq-2.1.9-py2.7-win32.egg\zmq\eventloop\ioloop.py,
line 291, in start
self._handlers[fd](fd, events)
File
C:\Python27\lib\site-packages\pyzmq-2.1.9-py2.7-win32.egg\zmq\eventloop\stack_context.py,
line 133, in wrapped
callback(*args, **kwargs)
File
Re: How to test if object is an integer?
On Sat, Oct 15, 2011 at 1:44 AM, MrPink tdsimp...@gmail.com wrote: Is there a function in Python that can be used to test if the value in a string is an integer? I had to make one up for myself and it looks like this: def isInt(s): try: i = int(s) return True except ValueError: return False According to [1], there're more Exceptions to test for: try: int(s) return True except (TypeError, ValueError, OverflowError): # int conversion failed return False [1] http://jaynes.colorado.edu/PythonIdioms.html, idiom Catch errors rather than avoiding them to avoid cluttering your code with special cases -Mathias -- http://mail.python.org/mailman/listinfo/python-list
Re: Equal sets with unequal print and str() representations
Thanks to all who replied - also to Ben. I had foolishly assumed that
the same set exhibits the same rep on at least one platform. Like any
bug, the falsity of my assumption took months to expose - till then,
things had worked fine. Needless to say I'm new to Python. (The double
printing is because I tend to work within an Emacs inferior shell.)
Cheers,
Ganesh
On 10/16/11 8:23 PM, Ben Finney wrote:
Ganesh Gopalakrishnangan...@cs.utah.edu writes:
This probably is known, but a potential pitfall (was, for me) nevertheless.
I suspect it is due to hash collisions between 's3' and 's13' in this
case?
What is the actual problem? What behaviour is occurring that doesn't
match your expectation?
S1==S2
S1==S2
True
str(S1)
str(S1)
{'s8', 's13', 's2', 's0', 's7', 's6', 's4', 's3', 's14'}
str(S2)
str(S2)
{'s8', 's3', 's2', 's0', 's7', 's6', 's4', 's13', 's14'}
str(S1) == str(S2)
False
Right, that's all correct (though I don't know why some of your
expressions are being shown twice). A deliberate property of a set is
that its items are unordered.
URL:http://docs.python.org/library/stdtypes.html#set
Since sets are unordered, the string representation may show the items
in an arbitrary and unpredictable sequence. Don't write any code that
depends on a predictable sequence of retrieval from an unordered
collection.
So what did you expect instead, and what supports that expectation?
--
http://mail.python.org/mailman/listinfo/python-list
Re: How to test if object is an integer?
On Sat, Oct 15, 2011 at 12:44 AM, MrPink tdsimp...@gmail.com wrote: Is there a function in Python that can be used to test if the value in a string is an integer? I had to make one up for myself and it looks like this: def isInt(s): try: i = int(s) return True except ValueError: return False There's the isdigit method, for example - str = 1324325 str.isdigit() True str = 1232.34 str.isdigit() False str = I am a string, not an int! str.isdigit() False -- http://mail.python.org/mailman/listinfo/python-list
Re: Benefit and belief
DevPlayer devpla...@gmail.com writes: Do you not see? For ... One man's delusion is another man's epiphany. One man's untruth is another man's belief. One man's logical undenighable truth is another man's small part of a bigger picture. Those are just not true. A belief that doesn't match reality is a delusion. That doesn't change when someone thinks it's an epiphany: it's still a delusion. If a claim about reality doesn't actually match reality, it's untrue. That doesn't change when someone believes it: it's still untrue, or claims it's “part of a bigger picture”. If you make claims about reality, then you'd better be ready for them to be subjected to the tests of reality, or be ready for ridicule if you can't back them up with such tests. If, on the other hand, you claim a “bigger picture”, then that's just another scope within reality and you haven't escaped any part of your burden to demonstrate that reality. If, on the gripping hand, you want to make claims that are *not* about reality, then be very clear about that at the beginning and don't try to shift the goalposts later. http://en.wikipedia.org/wiki/Euclidean_geometry Euclid's axioms seemed so intuitively obvious that any theorem proved from them was deemed true in an absolute, often metaphysical, sense. Today, however, many other self-consistent non-Euclidean geometries are known, the first ones having been discovered in the early 19th century. An implication of Einstein's theory of general relativity is that Euclidean space is a good approximation to the properties of physical space ... Yes. Anyone who claimed that Euclids axioms hold in real spacetime was *wrong*. If they believed it, they were *deluded*. There was no shame in that before the discovery that Euclid's axioms don't hold in real spacetime. But, once its falseness has been demonstrated, to handwave about “one man's truth” and “bigger picture” is an attempt to avoid the admission that the claim was false. It is uncomfortable – sometimes painful – to admit that one's belief does not match reality; and hence natural and common for us to seek to avoid that admission when the evidence is against our belief. But that doesn't lessen the delusion. -- \“Human reason is snatching everything to itself, leaving | `\ nothing for faith.” —Bernard of Clairvaux, 1090–1153 CE | _o__) | Ben Finney -- http://mail.python.org/mailman/listinfo/python-list
Re: Equal sets with unequal print and str() representations
Ganesh Gopalakrishnan gan...@cs.utah.edu writes: Thanks to all who replied - also to Ben. You're welcome. (Please don't top-post your replies.) Needless to say I'm new to Python. Welcome to this forum, then! You would be wise to get a solid grounding in Python by working through the Python tutorial from beginning to end URL:http://docs.python.org/tutorial/. Perform each exercise, experiment with it until you understand, and only then move on to the next. Repeat until done :-) -- \ “Know what I hate most? Rhetorical questions.” —Henry N. Camp | `\ | _o__) | Ben Finney -- http://mail.python.org/mailman/listinfo/python-list
Re: How to test if object is an integer?
On Mon, Oct 17, 2011 at 2:44 PM, Noah Hall enali...@gmail.com wrote: There's the isdigit method, for example - str = 1324325 str.isdigit() True str = 1232.34 str.isdigit() False str = I am a string, not an int! str.isdigit() False That works for non-negative base-10 integers. But: -1234.isdigit() False Cheers, Ian -- http://mail.python.org/mailman/listinfo/python-list
Re: How to test if object is an integer?
In article mailman.2051.1318881724.27778.python-l...@python.org,
Mathias Lafeldt mathias.lafe...@googlemail.com wrote:
According to [1], there're more Exceptions to test for:
try:
int(s)
return True
except (TypeError, ValueError, OverflowError): # int conversion failed
return False
I don't think I would catch TypeError here. It kind of depends on how
isInt() is defined. Is it:
def isInt(s):
Return True if s is a string representing an integer
or is it:
def isInt(s):
Return True if s (which must be a string) represents an integer
If the latter, then passing a non-string violates the contract, and the
function should raise TypeError. If the former, then you could make
some argument for catching the TypeError and returning False, but I
think the second version is what most people have in mind for isInt().
Can you even get an OverflowError any more in a modern Python?
int('9')
9L
--
http://mail.python.org/mailman/listinfo/python-list
Re: How to test if object is an integer?
Python 2.6 running on Windows 7:
99.0**99**99
OverflowError: (34, 'Result too large')
Traceback (most recent call last):
File stdin-inspect, line 1, in module
OverflowError: (34, 'Result too large')
However, from the documentation:
Because of the lack of standardization of floating point exception
handling in C, most floating point operations also aren’t checked.
(http://docs.python.org/library/exceptions.html#exceptions.OverflowError)
Chris
On Mon, Oct 17, 2011 at 5:33 PM, Roy Smith r...@panix.com wrote:
In article mailman.2051.1318881724.27778.python-l...@python.org,
Mathias Lafeldt mathias.lafe...@googlemail.com wrote:
According to [1], there're more Exceptions to test for:
try:
int(s)
return True
except (TypeError, ValueError, OverflowError): # int conversion failed
return False
I don't think I would catch TypeError here. It kind of depends on how
isInt() is defined. Is it:
def isInt(s):
Return True if s is a string representing an integer
or is it:
def isInt(s):
Return True if s (which must be a string) represents an integer
If the latter, then passing a non-string violates the contract, and the
function should raise TypeError. If the former, then you could make
some argument for catching the TypeError and returning False, but I
think the second version is what most people have in mind for isInt().
Can you even get an OverflowError any more in a modern Python?
int('9')
9L
--
http://mail.python.org/mailman/listinfo/python-list
--
http://mail.python.org/mailman/listinfo/python-list
Re: How to test if object is an integer?
On Mon, Oct 17, 2011 at 6:40 PM, Chris Kaynor ckay...@zindagigames.com wrote: Python 2.6 running on Windows 7: 99.0**99**99 OverflowError: (34, 'Result too large') Traceback (most recent call last): File stdin-inspect, line 1, in module OverflowError: (34, 'Result too large') However, from the documentation: Because of the lack of standardization of floating point exception handling in C, most floating point operations also aren’t checked. (http://docs.python.org/library/exceptions.html#exceptions.OverflowError) I think what Roy meant was can you even get an OverflowError from calling int() any more, to which I think the answer is no, since in modern Pythons int() will auto-promote to a long, and in Python 3 they're even the same thing. -- http://mail.python.org/mailman/listinfo/python-list
Re: How to test if object is an integer?
- Original Message - From: Noah Hall enali...@gmail.com To: MrPink tdsimp...@gmail.com Cc: python-list@python.org Sent: Tuesday, October 18, 2011 4:44 AM Subject: Re: How to test if object is an integer? There's the isdigit method, for example - str = 1324325 str.isdigit() True str = 1232.34 str.isdigit() False str = I am a string, not an int! str.isdigit() False There are some corner cases to be considered with this approach: 1. negative integers: '-3' 2. strings starting with '0': '03' 3. strings starting with one '+': '+3' -- http://mail.python.org/mailman/listinfo/python-list
Re: How to test if object is an integer?
On Mon, 17 Oct 2011 18:59:44 -0600, Ian Kelly wrote:
On Mon, Oct 17, 2011 at 6:40 PM, Chris Kaynor ckay...@zindagigames.com
wrote:
Python 2.6 running on Windows 7:
99.0**99**99
OverflowError: (34, 'Result too large') Traceback (most recent call
last):
File stdin-inspect, line 1, in module
OverflowError: (34, 'Result too large')
However, from the documentation:
Because of the lack of standardization of floating point exception
handling in C, most floating point operations also aren’t checked.
(http://docs.python.org/library/
exceptions.html#exceptions.OverflowError)
I think what Roy meant was can you even get an OverflowError from
calling int() any more, to which I think the answer is no, since in
modern Pythons int() will auto-promote to a long, and in Python 3
they're even the same thing.
You can still get an OverflowError:
inf = float('inf')
int(inf)
Traceback (most recent call last):
File stdin, line 1, in module
OverflowError: cannot convert float infinity to integer
and similarly for Decimal('inf') as well.
--
Steven
--
http://mail.python.org/mailman/listinfo/python-list
Re: Fwd: os.statvfs bug or my incompetence ?
Hi, not yet, I will check it today, thanks for the idea ! We may have some deeper problem... Br, Peter. On 10/15/2011 05:46 PM, ext Kev Dwyer wrote: Peter G. Marczis wrote: snip Hello Peter, Welcome to the list. Have you tried calling statvfs from a C program? What happens if you do? Best regards, Kev -- http://mail.python.org/mailman/listinfo/python-list
[issue11638] pysetup un sdist crashes with weird trace if version is unicode by accident
Changes by Mike Hoy mho...@gmail.com: -- nosy: +mikehoy ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue11638 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue12944] Accept arbitrary files for packaging's upload command
Changes by Mike Hoy mho...@gmail.com: -- nosy: +mikehoy ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue12944 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue8060] PEP 3101 string formatting missing engineering presentation type for floating point
Changes by Nick Coghlan ncogh...@gmail.com: -- nosy: +ncoghlan ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue8060 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue5289] ctypes.util.find_library does not work under Solaris
Changes by Maciej Bliziński maciej.blizin...@gmail.com: -- nosy: +automatthias ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue5289 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue13195] subprocess: args with shell=True is not documented on Windows
New submission from anatoly techtonik techto...@gmail.com: For UNIX, it is said that if shell=False then you need to pass `args` as a list (if you want to pass any parameters to executable). Is that true for Windows (and perhaps other platforms) as well? Again, for UNIX it is said that with shell=True, and args is a list - every item except the first one is an argument to the shell itself. Is it the same on Windows? It would be better to just give advice in `shell` parameter description to pass args as a list with shell=False or else you'll lose params in Unix. If shell=True you need to pass args as a string, because list is needed only if you need to pass arguments to shell itself. -- assignee: docs@python components: Documentation, Library (Lib) messages: 145662 nosy: docs@python, techtonik priority: normal severity: normal status: open title: subprocess: args with shell=True is not documented on Windows ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue13195 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue13195] subprocess: args with shell=True is not documented on Windows
STINNER Victor victor.stin...@haypocalc.com added the comment: See also issues #7839, #8972 and #10197. -- nosy: +haypo ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue13195 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue13196] subprocess: undocumented if shell=True is necessary to find executable in Windows PATH
New submission from anatoly techtonik techto...@gmail.com: The reason I ask is this changeset - http://code.google.com/p/spyderlib/source/detail?spec=svne5d86b685619a470d593aa5f9ee360ba60779bc1r=323c6c697f045166e384cdc15803d40eebed0a2b - seems like without shell=True, subprocess.Popen is unable to find Mercurial executable in PATH. -- assignee: docs@python components: Documentation messages: 145664 nosy: docs@python, techtonik priority: normal severity: normal status: open title: subprocess: undocumented if shell=True is necessary to find executable in Windows PATH ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue13196 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue13196] subprocess: undocumented if shell=True is necessary to find executable in Windows PATH
STINNER Victor victor.stin...@haypocalc.com added the comment: Can't you merge this issue with #13195? -- nosy: +haypo ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue13196 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue12619] Automatically regenerate platform-specific modules
Arfrever Frehtes Taifersar Arahesis arfrever@gmail.com added the comment: Regeneration of platform-specific modules fixes concerns about their outdateness and architecture differences (32-bit vs 64-bit, big endian vs little endian). Regeneration of given module could be performed only when corresponding header is available. Eventually regeneration of platform-specific modules could be controlled by an option of `configure`. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue12619 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue13197] subprocess: move shell arguments to a separate keyword param
New submission from anatoly techtonik techto...@gmail.com: subprocess.Popen(args, shell=shell) is implicitly inconsistent on Unix: 1. when shell=False, the args should be a list or you'll lose program options 2. when shell=True, the args should be a string or your program options will be passed to shell itself I propose to make consistent behaviour - require args to be a list, and pass shell options in a separate shell_args keyword argument. If it not for python4, then perhaps it can be implemented in PopenShell() and PopenSystem() functions. This will also require unification of behaviour across platforms. -- components: Library (Lib) messages: 145669 nosy: techtonik priority: normal severity: normal status: open title: subprocess: move shell arguments to a separate keyword param ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue13197 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue13197] subprocess: move shell arguments to a separate keyword param
STINNER Victor victor.stin...@haypocalc.com added the comment: Did you read the issue #7839? -- nosy: +haypo ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue13197 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue7317] Display full tracebacks when an error occurs asynchronously
Changes by Éric Araujo mer...@netwok.org: -- keywords: +needs review priority: high - normal stage: needs patch - patch review versions: +Python 3.3 -Python 2.7, Python 3.2 ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue7317 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue13195] subprocess: args with shell=True is not documented on Windows
anatoly techtonik techto...@gmail.com added the comment: Looks like a can of worms. For now I'll be pretty fine if this stuff is at least properly documented. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue13195 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue13195] subprocess: args with shell=True is not documented on Windows
STINNER Victor victor.stin...@haypocalc.com added the comment: For now I'll be pretty fine if this stuff is at least properly documented. Can you propose a document patch describing the current behaviour? -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue13195 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue13196] subprocess: undocumented if shell=True is necessary to find executable in Windows PATH
anatoly techtonik techto...@gmail.com added the comment: Although they both touch the same components, they are completely different user stories. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue13196 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue13195] subprocess: args with shell=True is not documented on Windows
anatoly techtonik techto...@gmail.com added the comment: Certainly not right now as I don't have development environment setup. Perhaps in a few days if somebody pings me. It could be a lot easier with online editor, of course - http://code.google.com/p/pydotorg/issues/detail?id=6 -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue13195 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue13195] subprocess: args with shell=True is not documented on Windows
Changes by Ross Lagerwall rosslagerw...@gmail.com: -- nosy: +rosslagerwall ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue13195 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue13196] subprocess: undocumented if shell=True is necessary to find executable in Windows PATH
Changes by Ross Lagerwall rosslagerw...@gmail.com: -- nosy: +rosslagerwall ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue13196 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue13197] subprocess: move shell arguments to a separate keyword param
Changes by Ross Lagerwall rosslagerw...@gmail.com: -- nosy: +rosslagerwall ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue13197 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue13197] subprocess: move shell arguments to a separate keyword param
anatoly techtonik techto...@gmail.com added the comment: No. I won't be fixed in 2.7 anyway, and if it can not be fixed, it should be documented at least. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue13197 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue13197] subprocess: move shell arguments to a separate keyword param
anatoly techtonik techto...@gmail.com added the comment: Oh, sorry - my attention span is limited under time pressure. #7839 is related, of course. There is a lot of comments, so I'll take a look at it later. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue13197 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue13182] pysetup run bdist_wininst does not work (tries to use install command)
Changes by Éric Araujo mer...@netwok.org: -- stage: - committed/rejected ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue13182 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue13195] subprocess: args with shell=True is not documented on Windows
STINNER Victor victor.stin...@haypocalc.com added the comment: Certainly not right now as I don't have development environment setup See our development guide to get such environment: http://docs.python.org/devguide/setup.html It could be a lot easier with online editor Would like like to work on this project? (provide an online editor) -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue13195 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue13151] pysetup3 run bdist_wininst fails
Éric Araujo mer...@netwok.org added the comment: I’ve patched most of bdist_wininst and started to work on a few tests which work under 2.7 and fail under 3.2 without the fixes so that I can assume I’ve not broken anything. However, the mapping API of the Metadata class is quite unfriendly. For example, if I try to replace metadata.long_description with metadata['description'], no exception will be raised if the metadata does not contain a description, it will return 'UNKNOWN'. Code quickly becomes ugly. I will open another report to ask Tarek to allow me to revamp the mapping API of Metadata so that code can be easier to write and read. (I’m also removing the dependency on another bug that’s not really a blocker.) -- dependencies: -Rename install_dist to install ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue13151 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue13151] pysetup3 run bdist_wininst fails
Éric Araujo mer...@netwok.org added the comment: To clarify: the part about the tests applies to distutils. 3.x fixes will then be ported to packaging. Starting with successful tests in distutils 2.7 makes me feel more confident about editing distutils 3.x and packaging 3.3. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue13151 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue10945] bdist_wininst depends on MBCS codec, unavailable on non-Windows
Éric Araujo mer...@netwok.org added the comment: Would the proposed change mean that a bdist_wininst built with 3.2.0 won’t work with a patched 3.2.3? -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue10945 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue12703] Improve error reporting for packaging.util.resolve_name
Éric Araujo mer...@netwok.org added the comment: I would like to commit this. Tests are needed. Does someone want to write them? Please ask any question you might have, we’re here to help :) -- stage: needs patch - test needed versions: +3rd party ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue12703 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue12405] packaging does not record/remove directories it creates
Éric Araujo mer...@netwok.org added the comment: I'm not sure what you mean by using. AFAIK, each distribution's files (recorded in RECORD) would be unique to that distribution (else distros like Debian will have problems, since files are owned by one package and one package only). Files need to belong to one distribution only, but directories can be shared by more than one. In my example, I meant that ProjectX can create the directories a and a/b and the file a/b/thing, then ProjectZ can create the file a/b/otherthing, and if we remove ProjectX and then ProjectZ, a and a/b won’t be in ProjectZ’s RECORD, because they were in ProjectX’s. Carl: Can you tell us how pip removes directories? 1. Record any directories that are created in RECORD, ideally bottom-up. To solve the problem I mentioned above (hopefully making sense this time :), we’d need to record all directories that would have been created. It may be hard or even unfeasible to sort “directory that existed before Python was installed”, e.g. /usr/lib/python2.7/site-packages, and “directory created by one project”, e.g. /usr/lib/python2.7/site-packages/somelib. -- nosy: +carljm ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue12405 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue12405] packaging does not record/remove directories it creates
Éric Araujo mer...@netwok.org added the comment: s/directory that existed before Python was installed/directory that existed before any distribution was installed/ -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue12405 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue13181] pysetup install creates .pyc files but pysetup remove doesn't delete them
Éric Araujo mer...@netwok.org added the comment: That’s odd. Are the pyc files in RECORD? -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue13181 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue13193] test_packaging and test_distutils failures under Windows
Éric Araujo mer...@netwok.org added the comment:
The first failure looks like a bug in the manifest recursive-include code:
FAIL: test_process_template (distutils.tests.test_filelist.FileListTestCase)
--
Traceback (most recent call last):
File distutils\tests\test_filelist.py, line 181, in test_process_template
self.assertEqual(file_list.files, ['d/b.py', 'd/d/e.py'])
AssertionError: Lists differ: [] != ['d/b.py', 'd/d/e.py']
The second one may be a sys.path issue:
ERROR: test_resources
(packaging.tests.test_command_install_data.InstallDataTestCase)
--
Traceback (most recent call last):
File packaging\tests\test_command_install_data.py, line 129, in
test_resources
with packaging.database.get_file('Spamlib', 'spamd') as fp:
File packaging\database.py, line 649, in get_file
return open(get_file_path(distribution_name, relative_path),
File packaging\database.py, line 644, in get_file_path
raise LookupError('no distribution named %r found' % distribution_name)
LookupError: no distribution named 'Spamlib' found
The test creates a temporary directory which is inserted at the head of
sys.path. packaging.database.get_distribution should thus find
Spamlib-0.1.dist-info. Can someone with a Windows install help me with this?
Printing sys.path and os.listdir(sys.path[0]) would be a good start.
--
nosy: +higery, jlove, pmoore
___
Python tracker rep...@bugs.python.org
http://bugs.python.org/issue13193
___
___
Python-bugs-list mailing list
Unsubscribe:
http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue1673007] urllib2 requests history + HEAD support
Éric Araujo mer...@netwok.org added the comment: Attached patch changes one occurrence of ugly whitespace, changes “not x == y” to “x != y” and “not x in y” to “x not in y”. Senthil, feel free to apply none, some or all of these minor cleanups. -- Added file: http://bugs.python.org/file23424/urllib.request-cleanup.diff ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue1673007 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue13198] Remove duplicate definition of write_record_file
New submission from Éric Araujo mer...@netwok.org: We have duplicate code to write a PEP 376 RECORD file in packaging.util and packaging.command.install_distinfo. The command should use the function from p7g.util. Tests would also be good: Currently, one function uses LF as end of line (change made by Tarek, so authoritative) but the other uses os.linesep. -- assignee: eric.araujo components: Distutils2 keywords: easy messages: 145687 nosy: alexis, eric.araujo priority: normal severity: normal stage: test needed status: open title: Remove duplicate definition of write_record_file versions: 3rd party, Python 3.3 ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue13198 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue13175] packaging uses wrong line endings in RECORD files on Windows
Éric Araujo mer...@netwok.org added the comment: I found the problem - it's in packaging.util.write_record_file. We have two functions that write RECORD files; I’ve opened a report to kill one. The file passed to csv.writer should be opened with newline=''. How will we port this to 2.x? I don't expect the test will catch the issue except on Windows... Do you mean that the test will fail or be a no-op on other OSes? We can mark it as Windows-specific (@unittest.skipIf(sys.platform != 'win32', 'test only relevant on win32')) or just let it run if it’s harmless. The important point is: does it fail before the fix, does it pass after? -- assignee: tarek - eric.araujo dependencies: +Remove duplicate definition of write_record_file versions: +3rd party ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue13175 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue13199] slice_richcompare() might leak an object in rare cases
New submission from Sven Marnach s...@marnach.net: If exactly one of the two tuple allocations in [1] fails, the tuple that is successfully allocated won't be freed. (This probably never happened. Are you interested in this kind of bug report anyway?) [1]: http://hg.python.org/cpython/file/f6b3ad301851/Objects/sliceobject.c#l349 -- components: Interpreter Core messages: 145689 nosy: smarnach priority: normal severity: normal status: open title: slice_richcompare() might leak an object in rare cases ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue13199 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue13172] Improve detection of availability of bdist_msi command
Éric Araujo mer...@netwok.org added the comment: Arguably, the command shouldn't fail, it should simply omit the bdist_msi command from the listing. But as _msi is part of Python, the installation is broken if it isn't present so I guess that handling the issue gracefully isn't really important. My first feeling was agreement with your request, but then you added that _msi is part of Python, so I’m not sure we should increase the code complexity for a non-issue. (I assume the missing _msi extension isn't an issue on Unix). Yep, see Lib/packaging/command/__init__.py: # XXX this is crappy if os.name == 'nt': _COMMANDS['bdist_msi'] = 'packaging.command.bdist_msi.bdist_msi' it feels symptomatic of a general lack of clean error handling, which I think should be fixed :-( I suppose the traceback would have been much more useful with #12703 fixed. (There are a number of resolve_name-like functions out there, it’s sad to see it reimplemented with various degree in the quality of error reporting over and over again.) Besides the problem with resolve_name, I think there’s a specific problem with bdist_msi. As you can see with the comment I added in the code and quoted above, I’m not satisfied with the way we add bdist_msi to the set of available commands. It’s the only command to be special-cased; I guess it can’t be helped, so maybe I should remove the comment. I could change the conditional to register the command if _msi can be successfully imported; however, I fear this would hide bugs, as _msi is a part of a Python installation on Windows, so I’d rather continue to check os.name. Would you be satisfied with a more helpful traceback that would point you immediately to missing msi? Do you prefer that bdist_msi catch an ImportError for _msi and print a short error message instead of a traceback in all its glory? -- assignee: tarek - eric.araujo title: pysetup run --list-commands fails with a traceback - Improve detection of availability of bdist_msi command versions: +3rd party ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue13172 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue13199] slice_richcompare() might leak an object in rare cases
Changes by Meador Inge mead...@gmail.com: -- nosy: +meador.inge stage: - test needed type: - resource usage versions: +Python 2.7, Python 3.2, Python 3.3 ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue13199 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue7833] bdist_wininst installers fail to load extensions built with Issue4120 patch
Éric Araujo mer...@netwok.org added the comment: To port the patch to packaging, go into your CPython 3.3 checkout and edit Lib/packaging/compiler/msvc9compiler.py (and its test :). To port the patch to distutils2, clone http://hg.python.org/distutils2/ and edit distutils/compiler/msvc9compiler.py (same :). Test with Python 2.4, 2.5, 2.6 and 2.7. Then hg update python3, hg merge default, test with Python 3.1, 3.2 and 3.3. Then you can push :) If you don’t have the necessary Pythons or roundtuits, I’ll port the patch when I get a Windows VM. There’s plenty of time before Python 3.3 is out. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue7833 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue7833] bdist_wininst installers fail to load extensions built with Issue4120 patch
Éric Araujo mer...@netwok.org added the comment: s/distutils/distutils2/ ! -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue7833 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue7475] codecs missing: base64 bz2 hex zlib hex_codec ...
Éric Araujo mer...@netwok.org added the comment:
transform() and untransform() methods were also removed, I don't remember
why/how exactly,
I don’t remember either; maybe it was too late in the release process, or we
lacked enough consensus.
So we have rot13 friends in Python 3.2 and 3.3, but they cannot be used
with the regular
str.encode('rot13'), you have to write (for example):
codecs.getdecoder('rot_13')
Ah, great, I thought they were not available at all!
The major issue with {bytes,str}.(un)transform() is that we have only one
registry for all
codecs, and the registry was changed in Python 3 [...] To implement
str.transform(), we need
another register. Marc-Andre suggested (msg96374) to add tags to codecs
I’m confused: does the tags idea replace the idea of adding another registry?
I'm still opposed to str-str (rot13) and bytes-bytes (hex, gzip, ...)
operations using the
codecs API. Developers have to use the right module.
Well, here I disagree with you and agree with MAL: str.encode and bytes.decode
are strict, but the codec API in general is not restricted to str→bytes and
bytes→str directions. Using the zlib or base64 modules vs. the codecs is a
matter of style; sometimes you think it looks hacky, sometimes you think it’s
very handy. And rot13 only exists as a codec!
--
___
Python tracker rep...@bugs.python.org
http://bugs.python.org/issue7475
___
___
Python-bugs-list mailing list
Unsubscribe:
http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue11638] python setup.py sdist crashes if version is unicode
Éric Araujo mer...@netwok.org added the comment: I can’t reproduce with pysetup or distutils 3.x. -- components: -Distutils2 title: pysetup un sdist crashes with weird trace if version is unicode by accident - python setup.py sdist crashes if version is unicode versions: -3rd party, Python 3.2, Python 3.3 ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue11638 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue11638] python setup.py sdist crashes if version is unicode
Éric Araujo mer...@netwok.org added the comment: Jens: Don't know it this is related to the usage of: from __future__ import unicode_literals ? Yes. This semi-magic import will turn your string literals into unicode literals, hence your name, version, etc. will be unicode objects. It’s the same thing as writing version=u'1.0'. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue11638 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue12703] Improve error reporting for packaging.util.resolve_name
Rémy HUBSCHER remy.hubsc...@ionyse.com added the comment: Ok, I am working on it. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue12703 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue7839] Popen should raise ValueError if pass a string when shell=False or a list when shell=True
Changes by Arfrever Frehtes Taifersar Arahesis arfrever@gmail.com: -- nosy: +Arfrever ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue7839 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue12405] packaging does not record/remove directories it creates
Vinay Sajip vinay_sa...@yahoo.co.uk added the comment: s/directory that existed before Python was installed/directory that existed before any distribution was installed/ IMO there is no need to remember any directory which isn't actually created by pysetup3. Deleting a __pycache__ in a directory created by pysetup3 would be implicit, and not need to be recorded. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue12405 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue13195] subprocess: args with shell=True is not documented on Windows
Changes by Arfrever Frehtes Taifersar Arahesis arfrever@gmail.com: -- nosy: +Arfrever ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue13195 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue13196] subprocess: undocumented if shell=True is necessary to find executable in Windows PATH
Changes by Arfrever Frehtes Taifersar Arahesis arfrever@gmail.com: -- nosy: +Arfrever ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue13196 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue13197] subprocess: move shell arguments to a separate keyword param
Changes by Arfrever Frehtes Taifersar Arahesis arfrever@gmail.com: -- nosy: +Arfrever ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue13197 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue415492] Compiler generates relative filenames
Changes by Arfrever Frehtes Taifersar Arahesis arfrever@gmail.com: -- nosy: +Arfrever ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue415492 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue13192] ImportError silences low-level OS errors
Changes by Arfrever Frehtes Taifersar Arahesis arfrever@gmail.com: -- nosy: +Arfrever ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue13192 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue13173] Default values for string.Template
Éric Araujo mer...@netwok.org added the comment:
Thanks for the patch. It mostly looks good; a detailed review follow.
+ The constructor takes two arguments, the first is the template string and
+ the second (optional) is a dictionary object which specify which values
+ should be used as default values, if no provided.
Just say “a dictionary”, or even “a mapping”. There’s also a grammar typo and
a bit of redundancy, so I propose: “is a mapping which gives default values”.
What do you think about adding a small example in the examples section later in
the file? It would probably be clearer than English.
Like :meth:`substitute`, except that if placeholders are missing from
- *mapping* and *kwds*, instead of raising a :exc:`KeyError` exception, the
- original placeholder will appear in the resulting string intact. Also,
- unlike with :meth:`substitute`, any other appearances of the ``$`` will
- simply return ``$`` instead of raising :exc:`ValueError`.
+ *mapping*, *kwds* and *default*, instead of raising a :exc:`KeyError`
default is not an argument, so *foo* markup is misleading. Either use “the
default values given to the constructor” or just “self.default”.
+ exception, the original placeholder will appear in the resulting string
+ intact. Also, unlike with :meth:`substitute`, any other appearances of
+ the ``$`` will simply return ``$`` instead of raising :exc:`ValueError`.
If you don’t mind, I prefer if you have a few very short or too long lines if
that helps reducing diff noise (i.e. lines that appear in the diff but are not
changed, only rewrapped).
+ .. attribute:: default
+
+ This is the optional dictionary object passed to the constructor's
+ *template* argument.
I’m not a native English speaker, but “passed to” seems wrong here (and in the
other attribute’s doc). I’d say “passed as the *default* argument”.
-def __init__(self, template):
+def __init__(self, template, default={}):
Binding a mutable object to a local name at compile time is not good: All
instances created without *default* argument will share the same dict, so
editions to onetemplate.default will change anothertemplate.default too. The
common idiom is to use None as default value and add this:
self.default = default if default is not None else {}
--
___
Python tracker rep...@bugs.python.org
http://bugs.python.org/issue13173
___
___
Python-bugs-list mailing list
Unsubscribe:
http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue13173] Default values for string.Template
Éric Araujo mer...@netwok.org added the comment: Adding Georg, maintainer of the string module, to the nosy list. If he approves the idea, you can go ahead and complete your patch. -- nosy: +georg.brandl ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue13173 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue13175] packaging uses wrong line endings in RECORD files on Windows
Paul Moore p.f.mo...@gmail.com added the comment: On 17 October 2011 14:15, Éric Araujo rep...@bugs.python.org wrote: The file passed to csv.writer should be opened with newline=''. How will we port this to 2.x? No idea :-( The 2.7 documentation says use the 'b' flag, but that probably doesn't allow an encoding parameter (it doesn't on 3.x). I don't expect the test will catch the issue except on Windows... Do you mean that the test will fail or be a no-op on other OSes? We can mark it as Windows-specific (@unittest.skipIf(sys.platform != 'win32', 'test only relevant on win32')) or just let it run if it’s harmless. The important point is: does it fail before the fix, does it pass after? The test fails before the fix, passes after. It's a no-op on platforms where text and binary files are the same, (i.e., non-Windows systems). So it's harmless. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue13175 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue13200] Add start, stop and step attributes to range objects
New submission from Sven Marnach s...@marnach.net: As discussed on python-ideas [1], range objects should expose their start, stop and step values as read-only data attributes. I've attached a patch to this end. I'll open a separate issue for range comparison. [1]: http://mail.python.org/pipermail/python-ideas/2011-October/012356.html -- components: Interpreter Core files: range-members messages: 145701 nosy: smarnach priority: normal severity: normal status: open title: Add start, stop and step attributes to range objects type: feature request Added file: http://bugs.python.org/file23425/range-members ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue13200 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
