Spaces only, btw, are recommended for Python in PEP-8, "Style Guide
for Python Code", <http://www.python.org/dev/peps/pep-0008/>. It's a
terribly good idea to adhere to this recommendation because it's the
prevalent use and because of Python's definition of blocks with
whitespace. Diverting usually results in increased pain when using
Python code from multiple origins.
For further information check PEP-666