About "Object in list" expression

[Mirons]

Hi everybody! I'm having a very annoying problem with Python: I need
to check if a (mutable) object is part of a list but the usual
expression return True also if the object isn't there. I've
implemented both __hash__ and __eq__, but still no result. what does
"in" implementation use for comparison (Python is 2.6)?

 

[Jon Clements]

Hi everybody! I'm having a very annoying problem with Python: I need
to check if a (mutable) object is part of a list but the usual
expression return True also if the object isn't there. I've
implemented both __hash__ and __eq__, but still no result. what does
"in" implementation use for comparison (Python is 2.6)?

It would help showing an example...

 

[Mirons]

It would help showing an example...

I just solved the problem! (Sorry for the bother). It was a matter of
inplementation. It's __eq__ that is called for checking instances in
list but I had implemented two version of __eq__ in different parts of
code and the interpreter chose the wrong one. Excuse me again for the
bother.