Neal Becker wrote: > Is there a more elegant way to spell this? > > for x in [_ for _ in seq if some_predicate]:
Don't use _ as the loop variable here. There are three common conventions for _ and this is none of them: (1) n the interactive interpreter _ is used for the result of the last expression: py> 1+2 3 py> _ * 2 6 (2) In locale-aware applications, _ is apparently used as a function for localising text into the user's native language. (3) _ is also commonly used as a "don't care" variable name: a, _, b, _ = get_four_items() # but I only care about two of them So in a loop, you would only use _ as the loop variable when you don't use the loop variable, e.g.: [random.random() for _ in range(10)] Of course, a convention is just a convention, not a law, you can ignore such conventions if you insist. But conventions make it easier and quicker to understand code, not just for others, but for yourself as well. -- Steven -- https://mail.python.org/mailman/listinfo/python-list
