[issue25843] lambdas on the same line may incorrectly share code objects

[STINNER Victor]

STINNER Victor added the comment:

compiler_add_o() uses an heuristic to compare and merge duplicated constants. It has special cases for float and complex numbers, but it's not designed to handle more types.

Funny, I had the same isue last week why I added support for tuple and frozenset "constants" in AST. I had to explicitly support these types in compiler_add_o().

I see two options:

(1) share code between compiler_add_o() and code_richcompare() to ensure that 1 and 1.0 constants are not seen as equal
(2) modify compiler_add_o() to never merge code objects, always considere them as unequal

For (2), there is a minor technical issue: you have to generate an unique key for the dictionary.

I prefer option (1) for consistency.

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue25843>
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