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Re: PyWart: Import resolution order

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From Terry Reedy <tjreedy@udel.edu>
Subject Re: PyWart: Import resolution order
Date Fri, 11 Jan 2013 08:35:37 -0500
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On 1/11/2013 1:13 AM, Rick Johnson wrote:
>
> Python's import resolution order is terrible.[1]
>
> The fact that Python looks in the stdlib _first_ is not a good idea.

And the fact is that it does not do so. The order depends on sys.path, 
and '' is the first entry.

> It would seem more intuitive for a custom "math" module (living in
> the current directory) to /override/ the stlib "math" module.

Try it.

This is a nuisance though, when not intended. Someone writes a 
random.py, and a year later in the same directory, an unrelated 
hopscotch.py, which tries to import random.exponential. The import fails 
and they post here, having forgotten about their own random.py, which 
does not have such a function. Posts like this happen a few times a year.

-- 
Terry Jan Reedy

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Thread

PyWart: Import resolution order Rick Johnson <rantingrickjohnson@gmail.com> - 2013-01-10 22:13 -0800
  Re: PyWart: Import resolution order Chris Angelico <rosuav@gmail.com> - 2013-01-11 17:30 +1100
    Re: PyWart: Import resolution order Rick Johnson <rantingrickjohnson@gmail.com> - 2013-01-11 21:28 -0800
      Re: PyWart: Import resolution order Chris Angelico <rosuav@gmail.com> - 2013-01-12 17:03 +1100
      Re: PyWart: Import resolution order Ian Kelly <ian.g.kelly@gmail.com> - 2013-01-12 00:36 -0700
        Re: PyWart: Import resolution order 88888 Dihedral <dihedral88888@googlemail.com> - 2013-01-12 19:56 -0800
        Re: PyWart: Import resolution order 88888 Dihedral <dihedral88888@googlemail.com> - 2013-01-12 19:56 -0800
    Re: PyWart: Import resolution order Rick Johnson <rantingrickjohnson@gmail.com> - 2013-01-11 21:28 -0800
      Re: PyWart: Import resolution order alex23 <wuwei23@gmail.com> - 2013-01-12 19:23 -0800
  Re: PyWart: Import resolution order Terry Reedy <tjreedy@udel.edu> - 2013-01-11 08:35 -0500
  Re: PyWart: Import resolution order Michael Torrie <torriem@gmail.com> - 2013-01-11 10:53 -0700
  Re: PyWart: Import resolution order Rick Johnson <rantingrickjohnson@gmail.com> - 2013-01-11 20:50 -0800
    Re: PyWart: Import resolution order alex23 <wuwei23@gmail.com> - 2013-01-11 23:44 -0800

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