Strings in python are immutable, so you cannot treat them as a list and assign to indices. Use .replace() instead: line = line.replace(';' ... ... <看更多>

With this, let's take a quick tour of some of Python's string manipulation tools. ... for the first occurrence of a character or substring within a string, ... ... <看更多>

The python replace string method gives the ability to replace content in an existing string and create a new ... ... <看更多>

"String can be a character sequence or regular expression. ... like regular Python str.replace() - using literal strings instead of regexes. ... <看更多>