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		reinhardt on Nov 9, 2010 \| parent \| context \| favorite \| on: First Impressions of Python from a Java Developer Sorry to break it out to you but you picked a bad example; the equivalent Python code has the same WTF effect: Python 2.6.6 (r266:84292, Oct 17 2010, 15:53:05) [GCC 4.4.3] on linux2 >>> a = int(10) >>> b = int(10) >>> c = int(1000) >>> d = int(1000) >>> a is b True >>> c is d False

Jabbles on Nov 9, 2010 [–]

Wow! Really? (I'm not a Pythonator.)

Same reasoning as Java?

reinhardt on Nov 9, 2010 | [–]

Basically yes, although it is not part of the language definition and should not be relied on. It's just an implementation artifact of CPython, and not only that but the threshold of which integers are cached changes for different Python versions.

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