Project Euler

[GrandizerII]

Ahh, I see what you mean.

You want to just initialize variables.

I think Python only allows you to do that with lists and tuples.

No, you can initialize variables with Python. What you did inside the procedure/function in Python code (a = 5) was an example of initializing, right?

Anyway, I can't remember why I wished variables in Python could just be declared/defined without initial assignment, but I did just learn something new in Python. Apparently, you can test for whether or not a variable has been defined using globals() or locals().

For example:

Code:

v = 0

if 'v' not in globals():
    print 'v not defined'
else:
    print 'v defined'

It won't throw an error at you for not defining v if you didn't. But note that you have to wrap quotes around the 'v' for this to run without errors.