Question

How should this function be changed to return "123456"?

def f():
    s = """123
    456"""
    return s

UPDATE: Everyone, the question is about understanding how to not have \t or whatever when having a multiline comment, not how to use the re module.

Answer 1

Don’t use a triple-quoted string when you don’t want extra whitespace, tabs and newlines.

Use implicit continuation, it’s more elegant:

def f():
    s = ('123'
         '456')
    return s