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A comment on The switch: Python to Node.js. Parent comment

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:

http://stackoverflow.com/questions/2858603/why-is-keyword-ha...

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

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