"mp" <[EMAIL PROTECTED]> wrote: > X-No-Archive > How do I go about modifying one character in a string elegantly? > In other words, I want a function that will change 'aaaa' to 'aaza', > given the index 2 of the character in the string.
Strings are immutable, so you can't change a string. The best you can do is create a new string from the old one. Something like: >>> old = 'aaaa' >>> new = old[:2] + 'z' + old[3:] >>> print new aaza or a few variations on that theme. > Also, how do I do this when dealing with a file ; which file mode > should I use and what function should I use to modify a single > character once in that file mode? This is a much more complicated question, because it depends on the details of the operating system you're using. On Unix, you can seek to a specific place in a file, write a single character, seek to EOF, and you've done an in-place single character edit of the file. I don't know if that works on other OS's or not. -- http://mail.python.org/mailman/listinfo/python-list
