Comment #6 on issue 189 by ken...@google.com: Generated message __cmp__()
in Python should consistently order generated messages
http://code.google.com/p/protobuf/issues/detail?id=189
I think most users would find that behavior surprising. Documenting the
behavior
isn't good enough -- developers will often make assumptions about things
that seem
"obvious" without reading the docs.
Some problems with implementing comparison "correctly":
1) What is correct? Different people will have different answers. Should
we compare
each field in order? Which order? Declaration order, or field number
order? Etc.
Different apps will have different needs.
2) If we ever implement unknown field retention in Python (as we have in
C++ and
Java), how do we compare them? Without knowing the type of the fields, any
comparison approach is arbitrary and possibly wrong.
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