What is the most pythonic way to check if multiple variables are not None?

Question

If I have a construct like this:

def foo():
    a=None
    b=None
    c=None

    #...loop over a config file or command line options...

    if a is not None an         


        

Answer 1

Writing a separate answer as I do not know how to format code when added as a comment.

Eternal_N00B's solution is not same as Daniel Roseman's solution. Consider for example:

>>> all(v is not None for v in [False])
True
>>> all([False])
False