[docs] [issue15718] Possible OverflowError in __len__ method undocumented (when called via len() function)

Terry J. Reedy added the comment: Has or will builtin classes be modified to follow advice to include a separate __bool__? In 3.6.1,

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r = range(19**100) bool(r) Traceback (most recent call last): File "<pyshell#1>", line 1, in <module> bool(r) OverflowError: Python int too large to convert to C ssize_t

---------- nosy: +serhiy.storchaka versions: +Python 3.7 _______________________________________ Python tracker <report@bugs.python.org> <http://bugs.python.org/issue15718> _______________________________________