I wonder if it is appropriate to replace the None sentinel with one that is an
instance
of Block() e.g.
size = total - P.BASE
excessblk = Block(size, srccol, carry_button_suppress=True, empty_block=(size
<= 0) )
In this particular case, Richard, I don't think so. The Block class is
an a
Diez wrote:
No. I love them. But not if they are so large that they stretch over several
lines (or to many columns).
foo = bar if cond else baz
is more than fine for me. But
foo = I_need_to_do_something_really_complicated_here() if cond else baz
isn't, because one doesn't grasp as easily in
Hi,
i was wondering if there is a syntax alike:
for i in range(10) if i > 5:
print i
You can write
for i in filter(lambda i: i > 5, range(10)):
print i
but
for i in range(10):
if i > 5:
print i
it' better readable, and
for i in range(6,10):
print i
it's e
Diez said:
Classes are not scopes.
So the above doesn't work because name resolution inside functions/methods
looks for local variables first, then for the *global* scope. There is no
class-scope-lookup.
But http://docs.python.org/tutorial/classes.html says, in Section 9.3 "A
First Look at
7stud said:
python ignores the names inside a function when it creates the
function. This "program" will not produce an error:
def f():
print x
python parses the file and creates the function object and assigns the
function object to the variable f. It's not until you execute the
functio
Stephen Hansen said:
But http://docs.python.org/tutorial/classes.html says, in Section
9.3 "A First Look at Classes":
When a class definition is entered, a new namespace is created,
and used as the local scope — thus, all assignments to local variables
go into this new name
def cb12(): return output(c1+'->'+c2)
def cb21(): return output(c2+'->'+c1)
I think these can be simplified, e.g:
def cb12(): output(c1+'->'+c2)
But I'd go with the functools.partial approach. You can save some code
by making output() do more of the work:
#---
On 9/24/2010 4:21 AM, Peter Otten wrote:
If you are not interested in the position of the substr use the "in"
operator:
if substr in s:
print "found"
else:
print "not found"
Another "missing feature" candidate: sublist
>>> 'bc' in 'abcde'
True
>>> list('bc') in list('abc
On 9/24/2010 2:45 PM, Tim Chase wrote:
On 09/24/10 13:01, Ethan Furman wrote:
John Posner wrote:
Another "missing feature" candidate: sublist
>>> 'bc' in 'abcde'
True
>>> list('bc') in list('abcde')
False
I'm not aw
eal(3)
meal.Report()# "This meal includes 3 eggs."
meal = SpamMeal()
meal.EGGS = 4
meal.Report() # "This meal includes 4 eggs."
#
-John Posner
--
http://mail.python.org/mailman/listinfo/python-list
On 10/10/2010 7:02 PM, Steven D'Aprano wrote:
On Sun, 10 Oct 2010 18:14:33 -0400, John Posner wrote:
Class attributes are often used as "class constants", so how about
naming them with UPPERCASE names, like other constants? When you choose
to override one of these const
On 10/14/2010 6:08 AM, Christopher Steele wrote:
Hi
I've been trying to decode a series of observations from multiple files
(each file is a different time) and put each type of observation into
their own separate file. The script runs successfully for one file but
whenever I try it for more they
On 10/14/2010 10:44 AM, Christopher Steele wrote:
The issue is that I need to be able to both, split the names of the
files so that I can extract the relevant times, and open each
individual file and process each line individually. Once I have
achieved this I need to append the sorted files ont
On 10/15/2010 6:59 AM, Christopher Steele wrote:
Thanks,
The issue with the times is now sorted, however I'm running into a
problem towards the end of the script:
File "sortoutsynop2.py", line 131, in
newline =
message_type+c+str(station_id)+c+newtime+c+lat+c+lon+c+c+"-"+c+
"002"
On 10/19/2010 9:39 AM, Lucasm wrote:
Hi,
A question. Is it possible to dynamically override a property?
class A(object):
@property
def return_five(self):
return 5
I would like to override the property for an instance of A to say the
string 'bla'.
Is this the sort of thing
On 10/20/2010 9:59 AM, Lucasm wrote:
Thanks for the answers. I would like to override the property though
without making special modifications in the main class beforehand. Is
this possible?
Take a look at http://docs.python.org/reference/datamodel.html#descriptors
The last paragraph of Sec
On 10/28/2010 12:16 PM, [email protected] wrote:
It's clear but tedious to write:
if 'monday" in days_off or "tuesday" in days_off:
doSomething
I currently am tending to write:
if any([d for d in ['monday', 'tuesday'] if d in days_off]):
doSomething
Is there a better pythonic
On 11/9/2010 3:44 PM, Gregory Ewing wrote:
I don’t get it.
I get it. Does that mean that I don't get it?
Yes. As Dr. Feynman said about quantum mechanics.
-John
--
http://mail.python.org/mailman/listinfo/python-list
On 11/9/2010 1:43 PM, Terry Reedy wrote:
... List *is* useful as an initializer for
collecitons.defaultdicts.
And it was useful when several members of this forum helped me to
develop a prime-number generator.
See http://www.mail-archive.com/[email protected]/msg288128.html.
(I meant t
I've started working, as a tech writer, for a Spanish software
configuration management company. And I'm investigating the idea of
releasing a user manual in the form of a wiki that supports
paragraph-by-paragraph commenting.
I looked at Django Book [1][2], but it's not clear to me how much of
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