[issue3439] create a numbits() method for int and long types

[STINNER Victor]

STINNER Victor <victor.stinner at haypocalc.com> added the comment:

> Accidentally removed the following message from Victor Stinner

No problem.

> Is there any good reason to make this a property?

Since numbits() cost is O(n) with n: number of digits. I prefer a 
method than a property because, IMHO, reading a property should be 
O(1) (*read* an attribute is different than *compute* a value).

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue3439>
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