Issue 1389673: Incorrect docs for return values of set update methods (original) (raw)

The documentation for set.update(), set.intersection_update(), set.difference_update() and set.symmetric_difference_update currently (as of r41806) states that these methods all return the updated set, implying that this is a not-in-place change. In fact, these methods do operate in place, each one of them returning None.

The attached diff (against Doc/lib/libstdtypes.tex, r41806) fixes this, making it clear that these are in-place operations.