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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