python for this C: "if ((a = b(c)) != NULL)"
David Carson
davidccarson at hotmail.com
Mon May 13 18:01:23 EDT 2002
This feels like a stupid question, but I'm having trouble seeing
outside of my C background right now.
I expected the C syntax above to work in Python, with None replacing
NULL, but it complains about the assignment in the inner parentheses.
In C, of course, the inner assignment has a side effect ('a' gets the
value) and has a value that can be compared to NULL.
So, how do I do this in Python, since I want to avoid running method
b() twice in the case where I want to use 'a' later? In other words,
I don't want to do:
if b(c):
a = b(c)
use a here ...
David
More information about the Python-list
mailing list