Iterating each character in a string using Python
As Johannes pointed out,
for c in "string": #do something with cYou can iterate pretty much anything in python using the for loop construct,
for example, open("file.txt") returns a file object (and opens the file), iterating over it iterates over lines in that file
with open(filename) as f: for line in f: # do something with lineIf that seems like magic, well it kinda is, but the idea behind it is really simple.
There's a simple iterator protocol that can be applied to any kind of object to make the for loop work on it.
Simply implement an iterator that defines a next() method, and implement an __iter__ method on a class to make it iterable. (the __iter__ of course, should return an iterator object, that is, an object that defines next())
If you need access to the index as you iterate through the string, use enumerate():
>>> for i, c in enumerate('test'):... print i, c... 0 t1 e2 s3 t