'in-place' string modifications in Python

Question

In Python, strings are immutable.

What is the standard idiom to walk through a string character-by-character and modify it?

The only methods I can think of a

Answer 1

you can use the UserString module:

 >>> import UserString
... s = UserString.MutableString('Python')
... print s
Python
>>> s[0] = 'c'
>>> print s
cython