Just in case it can't be retrieved, here is Greg's text from msg84360:

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Oh for reference, i left these out but they may interest people for
completeness sake.

assert_     15%
assertTrue   9%
assertFalse  5%

We don't currently have the auto type checking in assertEqual in our
internal codebase, direct use of the type specific methods has been
encouraged in the past but that doesn't mean it is the right thing for
Python.
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Again, my apologies.

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