The switch: Python to Node.js

Re:The switch: Python to Node.js by dtf on Sunday December 18, 2011 @09:36PM (#3368231)

>>> a = 100; b = 100; print (a is b)

True

>>> a = 1000; b = 1000; print (a is b)

True

>>> a = 1000

>>> b = 1000

>>> print (a is b)

False

Python has its quirks too. Most people learn them and get over it.

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Re:The switch: Python to Node.js by zeemonkee on Monday December 19, 2011 @03:44AM (#3368992)

This might be a good explanation for this behavior:

tl;dr; use "is" only with singetons (None etc)

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Re:The switch: Python to Node.js by sneak on Monday December 19, 2011 @10:57AM (#3369976)

I have never once used the 'is' keyword in python.

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Re:The switch: Python to Node.js by dtf on Monday December 19, 2011 @03:50PM (#3371084)

Have you ever tested for a None value?

    if foo is None:
      return

    if bar is not None:
      bar()

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