What is the pythonic way to count the leading spaces in a string?

Question

I know I can count the leading spaces in a string with this:

>>> a = \"   foo bar baz qua   \\n\"
>>> print \"Leading spaces\", len(a) - le         


        

Answer 1

i recently had a similar task of counting indents, because of which i wanted to count tab as four spaces:

def indent(string: str):
return sum(4 if char is '\t' else 1 for char in string[:-len(string.lstrip())])