In Python, both split() and join() are string methods used for manipulating text, but they serve opposite purposes:
split()breaks a string into a list of substrings based on a specified delimiter (default is whitespace). For example,"a,b,c".split(",")returns['a', 'b', 'c'].join()concatenates a list of strings into a single string, using a specified separator. For example,",".join(['a', 'b', 'c'])returns"a,b,c".
These methods are commonly tested in Python interviews. Mastering them helps with data parsing, formatting, and understanding core string operations.