[issue25210] Special-case NoneType() in do_richcompare()

[Serhiy Storchaka]

Serhiy Storchaka added the comment:

It makes the error message just non-relevant (or misleading) to the error.
It refers to int < NoneType, but actually the exception is raised when you 
compare an int instance with a NoneType instance, not two types theirself. 
Comparing *any two types* raises an exception, but comparing instances of two 
types can return a result.

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue25210>
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