Suggestion for s/the PythonDevelopment for next version/azrael

Bruno Desthuilliers bruno.42.desthuilliers at websiteburo.invalid
Mon Oct 13 12:03:05 EDT 2008


azrael a écrit :
> You know, sometimes it annoys me to write a for loop in Python. If we
> use a list a=[1,2,3,4], and want to loop through it, Python offers the
> next option
>>>> for i in a:
>>>>  print i
>>>>
> 1
> 2
> 3
> 4
> 
> I love this. So simple and smooth. But what happens if we need also
> the position of an object in a list. Then there comes this annoying
> writing.
> 
>>>> for i in range(len(a)):
>>>>  print a[i], i
>>>>
> 1 0
> 2 1
> 3 2
> 4 3


for index, obj in enumerate(any_sequence):
    print "obj %s is at position %s" % (obj, index)

print "And I might read the FineManual(tm) some day..."

HTH !-)


Oh, and while we're at it:

> I think that it would be great if the Python language, which is a
> totaly OOP language, could also use the index variable from the first
> example and consider it as an object with a Object variable. I mean
> the following.
> 
>>>> >>>for i in a:
>>>> >>>  print i, i.index                # i.index is my sugesstion

Python is 100% OO in that everything (at least everything you can bind 
to a name) is an object. But it doesn't mean everything has to be done 
using the dotted syntax...



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