[$] Python identifiers, PEP 8, and consistency

While there are few rules on the names of variables, classes, functions,and so on (i.e. identifiers) in the Python language, there are someguidelines on how those things should be named. But, of course, thoseguidelines were not always followed in the standard library, especially in the early years of the project. Asuggestion to add aliases to the standard library foridentifiers that do not follow the guidelines seems highly unlikely to goanywhere, but it led to an interesting discussion on the python-ideas mailing list.