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Asked: 2026-05-25T13:52:51+00:00

In Python, None evaluates to less than zero? ActivePython 2.7.2.5 (ActiveState Software Inc.) based

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In Python, None evaluates to less than zero?

ActivePython 2.7.2.5 (ActiveState Software Inc.) based on
Python 2.7.2 (default, Jun 24 2011, 12:21:10) [MSC v.1500 32 bit (Intel)] on win
32
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>>> None < 0
True
>>> None == 0
False
>>> None > 0
False
>>>

Is this expected?

I would have guessed that None would either be equal to zero (through type coercion), or that all of these statements would return False.

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1 Answer

  1. Editorial Team

    See the manual:

    Objects of different types, except different numeric types and different string types, never compare equal; such objects are ordered consistently but arbitrarily (so that sorting a heterogeneous array yields a consistent result).

    and

    CPython implementation detail: Objects of different types except numbers are ordered by their type names; objects of the same types that don’t support proper comparison are ordered by their address.

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