Thanks for the report. Could you elaborate a bit on the rational for the change? Aesthetics are usually not sufficient to change things; on the other hand, use of simplicity is a goal. Is is easier to remember two functions for two uses or to have one function with a parameter? Are users confused by the two functions with unhelpful names? These are the kinds of questions to answer before considering breaking everyone’s code with a deprecation and removal. Would you be willing to raise the issue on the python-ideas mailing list to get feedback? Thanks in advance.
If such a thing goes in then copytree() should also be taken into account and expose the same parameter. That would probably be inconsistent with copytree()'s copy_function parameter though.
