Re: A thread import problem

Discussion in 'Python' started by Bruce Sherwood, Jul 21, 2012.

  1. Thanks much for this clear statement. I hadn't managed to find any
    documentation on this specific issue.

    Bruce Sherwood

    On Sat, Jul 21, 2012 at 10:26 AM, Dave Angel <> wrote:
    > Two of the things you mustn't do during an import:
    >
    > 1) start or end any threads
    > 2) import something that's already in the chain of pending imports.
    > (otherwise known as recursive imports, or import loop). And there's a
    > special whammy reserved for those who import the script as though it
    > were a module.
    >
    > Like any rule, there are possible exceptions. But you're much better
    > off factoring your code better.
    >
    > I haven't managed to understand your software description, so i'm not
    > making a specific suggestion. But I know others have pointed out that
    > you should do as little as possible in top-level code of an imported
    > module. Make the work happen in a function, and call that function from
    > the original script, not from inside some import. An imported module's
    > top-level code should do nothing more complex than initialize module
    > constants.
    >
    >
    > --
    >
    > DaveA
    >
    >
    Bruce Sherwood, Jul 21, 2012
    #1
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