Codeforces: 131A – cAPS lOCK May 16, 2012 beginner, codeforces, implementation, non-technical, python, string No Comments This is from http://www.codeforces.com/problemset/problem/131/A The python does not allow altering string, because it seems the string is immutable. For example, if you try the following. s = "1234" s … [Continue Reading...]