[Tutor] pychecker: x is None or x == None
duncan at thermal.esa.int
Fri Aug 12 15:14:35 CEST 2005
We've been programming in Python for about a year. Initially we had a
lot of tests of the form
if x == None:
but then someone thought that we should really change these to
if x is None:
However. if you run pychecker on these two snippets of code, it
complains about the second, and not the first:
x.py:6: Using is None, may not always work
So the question is, which one should we really be using?
If it is the second, how do I get pychecker to shut up?
I've hunted around in the documentation, and if there is a clear
discussion about this issue, I must have missed it.
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