Re: [Tutor] Read active tab url from firefox
xbmuncher [EMAIL PROTECTED] wrote I want to make a program in python that knows the current url of the active tab in firefox. I want to be able to right click anywhere in my system, notepad, firefox..etc.. and be able to see an added menu option. Any pointers on doing this? This is impossible, sorry. You can get some of it to work, you might even get all of it to work some of the time, but you can't get all of it to work all of the time. You simply don't have that much control, nor should you! Summary of goals: 1. retrieve url of current tab from firefox That should be possible with some deep digging into the internals of FireFox's COM model or, if necessary, into its window tree. 2. add right click option that displays anywhere I right click the mouse in windows xp, notepad, a browser, desktop..wherever This is the tricky bit. Every program has the option of creating its own right-click menu and it may not expose that in such a way that you can add items to it. Some older Windows apps draw their own right click menus bypassing the Windows widget set and for those you have no chance (or if you do you will likely destroy the apps own menu system!). Even for those that use the standard Windows mechanisms it might be tricky. I think you will need to monitor the running task list and every time a new task starts your code will have to attach its menu item to that application. Even then things like X windows under cygwin has its own menuing system quite separate to Windows and I doubt it will be possible there without also writing a cygwin/X version of your code. Messing around with other people's applications is tricky and trying to do it in a generic way is trickier still. 3. maybe I want to activate an action in windows when I press some key combinations.. how can I do this with python? This could be standard windows hot-key functionality. You can assign hot keys in windows to bring up applications via the properrties/shortcut dialog. I don't kow your level of skill with Windows programming or Python but this may be a lot harder than you think. Its certainly not a project I'd recommend for a beginner in Python. -- Alan Gauld Author of the Learn to Program web site http://www.freenetpages.co.uk/hp/alan.gauld ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] Python open of c:\ path Problem
Message: 7
Date: Sun, 24 Aug 2008 00:21:45 +0100
From: Alan Gauld [EMAIL PROTECTED]
Subject: Re: [Tutor] Python open of c:\ path Problem
To: tutor@python.org
Message-ID: [EMAIL PROTECTED]
Content-Type: text/plain; format=flowed; charset=iso-8859-1;
reply-type=original
Wayne Watson [EMAIL PROTECTED] wrote
junkfile = open('c:\tmp\junkpythonfile','w')
IOError: [Errno 2] No such file or directory:
'c:\tmp\\junkpythonfile'
I suspect the problem is with the back slash. Comments?
Correct. There are several ways round this, the simplest
being to use forward slashes which are effectively portable
across most OSs.
junkfile = open('c:/tmp/junkpythonfile','w')
You could use a raw string by prefixing the string with r
junkfile = open(r'c:\tmp\junkpythonfile','w')
Or you could escape the backslash
junkfile = open('c:\\tmp\\junkpythonfile','w')
BTW, how does one continue a long statement
that has, say, a long path to a file?
You can create a long string by adding the shorter string
elements :
f = open(
a:/very/long/path/name/that/needs/a/whole/line/to./itself.py,
w)
becomes
f = open(a:/very/long/path/name/ +
that/needs/a/whole/ +
line/to./itself.py,w)
or by using a line continuation character.
f = open(a:/very/long/path/name/ \
that/needs/a/whole/ \
line/to./itself.py, w)
You don't even need the line continuation character, you can use
implicit line continuation character (since it's inside a parentheses)
f = open(a:/very/long/path/name/
that/needs/a/whole/
line/to./itself.py, w)
HTH,
___
Tutor maillist - Tutor@python.org
http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] __iter__ loops, partitioning list among children
Okay I think I'm onto something, more iterator-related stuff. If I can make self.events an iterator, then run a for loop on it, breaking out of the loop when the events' date attributes get too high. Then on the next run through, that same for loop should pick up where it left off, right? Here's my next version of the function. It doesn't quite work right: when I test it each child instance receives the correct events, but when it passes those events onto its children, they get consumed (or something) and are never actually output. To test I'm instantiating a Month m, filling it with events, then looping like so: for w in m: print w.event_count() for d in w: print d.events w.event_count() produces the right event count, but d.events is always empty. If anyone can see what's wrong with this function... ## def _iter_children(self, child, require_events=False): Iterate through an object's 'child' items. If require_events == True, only return children with events, otherwise return all children. iterevents = iter(self.events) while self.sentinel self.stop: c = child([], self.sentinel, self.start_attr, rolling=self.rolling, counts_only=self.counts_only) for e in iterevents: if getattr(e, self.start_attr) c.stop: c.events.append(e) else: break self.sentinel += c.dt_range if not require_events or c.has_events(): # if require_events == True, omit empty children. yield c On Aug 25, 2008, at 11:49 AM, Eric Abrahamsen wrote: On Aug 24, 2008, at 7:20 PM, Kent Johnson wrote: Forwarding to the list with my reply. Please use Reply All to reply to the list. Grr, sorry, I keep forgetting... On Sun, Aug 24, 2008 at 1:02 AM, Eric Abrahamsen [EMAIL PROTECTED] wrote: On Aug 23, 2008, at 11:22 PM, Kent Johnson wrote: On Sat, Aug 23, 2008 at 6:47 AM, Eric Abrahamsen [EMAIL PROTECTED] wrote: At first I thought the bisect module was the way to go, but it is too tightly tied to integer list indices, and works very awkwardly when bisecting on datetime attributes. I'm not sure what the problem is with bisect (to find the starting point). Your list of model elements has integer indices. I think you have to write a __cmp__ method for your model class that compares on the datetime attribute, then it should work. You can also create a list of (key, model) and sort/search that. http://www.mail-archive.com/[EMAIL PROTECTED]/msg189443.html The __cmp__ trick is very nice, and would do it, except I won't have access to the events model classes. I could get bisect to work by feeding it a list comprehension, but making the high and low parameters work required integer indices, which seemed like one half-hack too many... I don't understand the issue. *All* lists have integer indices. If you make a list of (key, model) pairs, the keys only need to be comparable, not integers. The main problem is that I don't have any control over the list of models, and all I've got is the name of a datetime attribute to filter by. The only way I could get bisect to work was like this: index = bisect([getattr(x, attr_name) for x in model_list], sentinel_date) But that loops over the whole list, which is what I was trying to avoid. And the only way I could provide high and low parameters to bisect is by calling event_list.index(event), which doesn't work on django querysets. I also experimented with itertools.groupby to produce groups of events, but that turned out to be far slower than simply looping over the whole event list and extracting events which test true for c.start = getattr(event, attr_name) c.stop. Ideally I could create a kind of concurrent iterator, that steps through children's blocks of time and the object's event list in tandem, rather than going over the whole events list once for every child produced. Maybe that's not possible... I'm pasting the whole function down below, just for the hell of it. Thanks again, Eric def _iter_children(self, child, require_events=False): Iterate through an object's 'child' items. If require_events == True, only return children with events, otherwise return all children. while self.sentinel self.stop: c = child([], self.sentinel, self.start_attr, rolling=self.rolling, counts_only=self.counts_only) for e in self.events: if c.start = getattr(e,self.start_attr) c.stop: c.events.append(e) self.sentinel += c.dt_range if not require_events or c.has_events(): yield c ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor ___ Tutor maillist - Tutor@python.org
Re: [Tutor] __iter__ loops, partitioning list among children
I'm not following your code very well. I don't understand the relationship between the first loop and the iter_children() function. A couple of things that might help: - Django QuerySets can be qualified with additional tests, so you could have each of your month/week/etc classes have its own correctly qualified QuerySet. This will result in one database query for each event class, and multiple copies of the actual events. - When you start iterating a QuerySet, it fetches all the model instances into a list. I think you are trying to use iterators to prevent this fetch but Django doesnt' work that way. You might as well just use the list. - Iterators can't be restarted, I think that is why your latest iter_children() doesn't work as you expect. Can you say some more about why you are doing this? Where do all the initial constraints come from? Do you really have to be so careful to protect against a 'madman' user? Perhaps you could set a limit on the number of events you will retrieve and use a count() on the QuerySet to ensure that not too many records have been fetched. Maybe you should try a straightforward implementation and when you have something working you can worry about making it better. Kent ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
[Tutor] editmypage
I wrote a password protected program to edit webpages via http. thiss iss in 2 files, one serves the editing page, one saves the edited page and shows the rssults. http://www.freeholdmarketing.com/EditMyPage.py http://www.freeholdmarketing.com/EditMyPage2.py This take a link on the page to edit. This can be a universal link by using server side includes such as: a href=/cgi-bin/EditMyPage.py?!--#echo var=DOCUMENT_URI --Edit this page/a Just a hack to make my life a little simpler. It is free, feel free to rip me off. -- Cheers! -Kirk D Bailey THINK +-+ .*.| BOX | ..*+-+ *** THINK ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
[Tutor] test
is my posting getting through? -- Cheers! -Kirk D Bailey THINK +-+ .*.| BOX | ..*+-+ *** THINK ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] editmypage
On Mon, Aug 25, 2008 at 12:18 PM, Kirk Bailey [EMAIL PROTECTED] wrote: I wrote a password protected program to edit webpages via http. thiss iss in 2 files, one serves the editing page, one saves the edited page and shows the rssults. http://www.freeholdmarketing.com/EditMyPage.py http://www.freeholdmarketing.com/EditMyPage2.py You might want to look into wikis like MoinMoin or Trac... Kent ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] test
yup On Mon, Aug 25, 2008 at 11:47 AM, Kirk Bailey [EMAIL PROTECTED]wrote: is my posting getting through? -- Cheers! -Kirk D Bailey THINK +-+ .*.| BOX | ..*+-+ *** THINK ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor -- To be considered stupid and to be told so is more painful than being called gluttonous, mendacious, violent, lascivious, lazy, cowardly: every weakness, every vice, has found its defenders, its rhetoric, its ennoblement and exaltation, but stupidity hasn't. - Primo Levi ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] test
Nope. Kirk Bailey wrote: is my posting getting through? ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] pass argument into running program *outside* of program
Emile van Sebille wrote: Lie Ryan wrote: In a much simpler situation, even a communicating from a plain file could be enough. In the daemon's program folder, there'll be two files: input and output. You write to input to instruct the server and read the response from output. This model is in respect to Unix's philosophy: make program to handle text streams, because it's the universal interface. I've done this and it works well... one thing to watch out for though is snagging a file before it's completely written. Setting up a semaphore or pausing to allow the file write to complete once seeing the file fixes it adequately. If instead of an input/output file you use a directory this is easily solved. You write your request to a uniquely named file (with .in extension) and you read the response out of an equally named file with a .out extension. The server polls the directory for new .in files and processes them in order of creation date (you can even include a priorities scheme coded in the extension (e.g. .in1 to .in9 for the different priorities). ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] Python Docs (Was: Reformatting phone number)
Kent Johnson wrote: On Fri, Aug 22, 2008 at 9:46 AM, Ricardo Aráoz [EMAIL PROTECTED] wrote: What I find lacking in the docs are a link to a code example for every item and a See Also link to other related items. With some modules I can't make sense of the different bits and pieces till I see a code example, and I think this would be the greatest improvement to the actually very good docs. You might like Doug Hellman's Python Module of the Week pages. He gives exhaustive examples of each module. http://www.doughellmann.com/projects/PyMOTW/ Kent Thanks Kent, yes, I knew the place. I didn't mean to say that I couldn't find code examples, after all google's my friend ;c). But I might also google for everything that I can find in the docs. What I meant is that the docs could be immensely improved by providing code examples IN them. ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] pass argument into running program *outside* of program
Ricardo Aráoz wrote: Emile van Sebille wrote: I've done this and it works well... one thing to watch out for though is snagging a file before it's completely written. Setting up a semaphore or pausing to allow the file write to complete once seeing the file fixes it adequately. If instead of an input/output file you use a directory this is easily solved. You write your request to a uniquely named file (with .in extension) But that doesn't solve the problem. If you have a lot of data to be written to the '.in' file you need to wait for the file writes to complete before reading the contents on the 'other' side. File existence isn't sufficient. Perhaps writing to a '.tmp' and renaming it to '.in' after completely written might do it without the possibility of consuming the partial file before it's ready. Emile ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
[Tutor] Why does the Hex builtin function in Python return a string ?
When I run this: type(hex(12)) type 'str' I get a string type back, i.e, '0xC' not 0xC On the other hand, if I use 0x with data, Python understands it is hex data and not a string value. e = 0xCD type(e) type 'int' Why does the Hex builtin function in Python return a string ? How can I convert this string returned by hex builtin function to data with 0x prefixed ? Am I missing anything ? Is there a builtin in Python (I'm using Python 2.5) that does this conversion from int to hex without returning a string value? It is a bit confusing. Thanks Ramses ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
[Tutor] Fwd: Why does the Hex builtin function in Python return a string ?
Forgot to send to list...
On Mon, Aug 25, 2008 at 7:45 PM, Py Hex [EMAIL PROTECTED] wrote:
When I run this:
type(hex(12))
type 'str'
I get a string type back, i.e, '0xC' not 0xC
On the other hand, if I use 0x with data, Python understands it is hex data
and not a string value.
e = 0xCD
type(e)
type 'int'
You missed trying something:
e = 0xCD
e
205
type(e)
type 'int'
It doesn't store the value as hex data, it stores it as an integer.
I'm really not sure about anything else (i.e. converting the value to an
integer - I've tried and int(e) doesn't work when it's a hex string) though.
HTH, Wayne
p.s. After a quick Google, I discovered how to convert the other way:
int('0xCD', 0) will give you the integer value of your string (if it's hex.
If you're doing octal you'll want int(myOctal, 8) )
--
To be considered stupid and to be told so is more painful than being called
gluttonous, mendacious, violent, lascivious, lazy, cowardly: every weakness,
every vice, has found its defenders, its rhetoric, its ennoblement and
exaltation, but stupidity hasn't. - Primo Levi
--
To be considered stupid and to be told so is more painful than being called
gluttonous, mendacious, violent, lascivious, lazy, cowardly: every weakness,
every vice, has found its defenders, its rhetoric, its ennoblement and
exaltation, but stupidity hasn't. - Primo Levi
___
Tutor maillist - Tutor@python.org
http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] Why does the Hex builtin function in Python return a string ?
2008/8/26 Py Hex [EMAIL PROTECTED]: When I run this: type(hex(12)) type 'str' I get a string type back, i.e, '0xC' not 0xC On the other hand, if I use 0x with data, Python understands it is hex data and not a string value. e = 0xCD type(e) type 'int' Why does the Hex builtin function in Python return a string ? How can I convert this string returned by hex builtin function to data with 0x prefixed ? If you type 0xC, you get a number. Try it: 0xC 12 '12' is the default python representation of the integer 0xC. Internally, it is (I guess) stored as a 4 byte chunk of memory; that is, a 32-bit long binary. There is _no difference_ between 0xC and 12: 0xC is 12 True The hex() function (and oct() too) provides you with a different string representation from the default. If you want to change python to display integers in hex instead of decimal by default, I can't help you.. (well, maybe you could subclass int, and change __repr__ and __str__ to return hex strings) -- John. ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] Why does the Hex builtin function in Python return a string ?
2008/8/26 John Fouhy [EMAIL PROTECTED]: The hex() function (and oct() too) provides you with a different string representation from the default. If you want to change python to display integers in hex instead of decimal by default, I can't help you.. (well, maybe you could subclass int, and change __repr__ and __str__ to return hex strings) Actually, that was easier than I thought: class HexInt(int): def __repr__(self): return hex(self) def __str__(self): return str(self) def __add__(self, other): return HexInt(int(self)+int(other)) def __sub__(self, other): return HexInt(int(self)-int(other)) def __mul__(self, other): return HexInt(int(self)*int(other)) def __div__(self, other): return HexInt(int(self)/int(other)) h1 = HexInt(13) h2 = HexInt(21) h1, h2 (0xd, 0x15) h1+h2 0x22 h1-h2 -0x8 h1*h2 0x111 int(h1*h2) 273 h1+16 0x1d Of course, there's obvious problems if you want to mix this with floats :-/ And I'm not sure what you'd gain, since as mentioned, integers are integers, whatever they look like. -- John. ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] Why does the Hex builtin function in Python return a string ?
On Mon, Aug 25, 2008 at 8:45 PM, Py Hex [EMAIL PROTECTED] wrote: When I run this: type(hex(12)) type 'str' I get a string type back, i.e, '0xC' not 0xC On the other hand, if I use 0x with data, Python understands it is hex data and not a string value. e = 0xCD type(e) type 'int' Why does the Hex builtin function in Python return a string ? How can I convert this string returned by hex builtin function to data with 0x prefixed ? I think you are confusing representation with value. 0xCD and 205 are different representations of the same value. The interpreter understands both but the values are the same. In fact if you ask Python for the value of e in your example, it will say it is 205. The base (10 or 16) is a property of the representation, not the value. The hex() function gives you the string representation of the value as a (base 16) hex string. The str() function gives the standard (base 10) string representation of an integer. Are you just curious or is there something specific you are trying to do? Kent ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] __iter__ loops, partitioning list among children
I do apologize for the large quantities of confusing description – articulating the problem here has helped me understand exactly what it is I'm after (though it hasn't improved my code!), and I've got a better grasp of the problem now than I did when I first asked. It isn't so much that I need to protect against crazy users, but that the pattern I'm making is very flexible, and could be used in vastly different ways. I want to make sure that it operates on efficient principles, so that people will get the best performance out of it no matter how they use it. So my test case: a Month has a 'child' attribute pointing at Week, which has a 'child' attribute pointing at Day, so they all know what kind of child instances iteration should produce. With nested loops, a Month produces one Week, that Week produces seven Days, then the next Week is produced, it makes seven more Days, etc. That much is easy. Then there's self.events. My original code looped over all of self.events for each child produced. A Month loops over its events four times, a Week seven times. This was the straightforward implementation, but it seemed inefficient. (I also, as you point out, might have been wrong about the way django QuerySets work). My thought was that only one loop over self.events should be necessary, in theory, since they're sorted by date. A for loop creates an iterator from a sequence and calls next() on it, and it creates an entirely new iterator each time you start a new for loop: each for loop starts from the beginning of the sequence. But if you create your own iterator from the sequence and run a for loop on it, then using break to jump out of the for loop should leave the iterator just where you left it, since it maintains state. Doing another for loop on it (the next time through the date-based while loop), should pick up where it left off. That's why the line iterevents = iter(self.events) is outside of the while loop: it is only created once, and the loops later in the function all make use of the same iterator, instead of creating a new one every time. I'm pretty sure this works in theory, because calling event_count() on the Weeks as they come out returns the correct number of events. But, for some reason, those events are not making it into the Day children. I had originally assumed that a QuerySet pulled objects out of the database in a rolling fashion – ie iterating on a Month would first draw a Week's worth of events from the database, then another Week, then two more. But if it loads them all at first access, then I might as well just call list() on the QuerySet at object instantiation, and save myself some trouble. I hope that's a little clearer. My central issue is maintaining my place in the self.events loop, and only advancing it as far as the date-based while loop advances. Whether that's possible or not... Thanks again, Eric On Aug 26, 2008, at 1:12 AM, Kent Johnson wrote: I'm not following your code very well. I don't understand the relationship between the first loop and the iter_children() function. A couple of things that might help: - Django QuerySets can be qualified with additional tests, so you could have each of your month/week/etc classes have its own correctly qualified QuerySet. This will result in one database query for each event class, and multiple copies of the actual events. - When you start iterating a QuerySet, it fetches all the model instances into a list. I think you are trying to use iterators to prevent this fetch but Django doesnt' work that way. You might as well just use the list. - Iterators can't be restarted, I think that is why your latest iter_children() doesn't work as you expect. Can you say some more about why you are doing this? Where do all the initial constraints come from? Do you really have to be so careful to protect against a 'madman' user? Perhaps you could set a limit on the number of events you will retrieve and use a count() on the QuerySet to ensure that not too many records have been fetched. Maybe you should try a straightforward implementation and when you have something working you can worry about making it better. Kent ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
