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Re: PyWart: "Python's import statement and the history of external dependencies"

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On Sat, Nov 22, 2014 at 10:21 AM, Rick Johnson
<rantingrickjohnson@gmail.com> wrote:
> 1. Use the historical "implicit import" mechanism for most day
> to day imports, and let Python do all the heavy lifting.
>
> 2. Use the new "explicit import" mechanism for advanced name
> resolutions, but realize that since you are now taking
> control of import, so you must do more work, and you must be
> "exhaustively explicit" about *where* Python searches.

In other words, what you want is:

# today's method, import based on search path
import sys
# new explicit path method
import '/usr/local/lib/python3.5/lib-dynload/math.cpython-35m.so'

Can you tell me, please, how this is going to work for *any* system
other than the one it was built on? One of the reasons I write Python
code is because I expect it to work unchanged on Windows, Linux, Mac
OS, BSD, OS/2, uPy, and any other platform I care to throw it onto. If
I want to hard-code all the details, I might as well write C code and
at least take advantage of ./configure to work out the right paths for
me.

There are a VERY VERY few cases where you really do want to import a
module from a specific file path. For those situations, there are
already techniques you can use. Why change the behaviour of import
itself?

ChrisA

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Thread

PyWart: "Python's import statement and the history of external dependencies" Rick Johnson <rantingrickjohnson@gmail.com> - 2014-11-15 21:01 -0800
  Re: PyWart: "Python's import statement and the history of external dependencies" Chris Angelico <rosuav@gmail.com> - 2014-11-16 16:16 +1100
  Re: PyWart: "Python's import statement and the history of external dependencies" alex23 <wuwei23@gmail.com> - 2014-11-21 10:14 +1000
    Re: PyWart: "Python's import statement and the history of external dependencies" Chris Angelico <rosuav@gmail.com> - 2014-11-21 11:31 +1100
    Re: PyWart: "Python's import statement and the history of external dependencies" Rick Johnson <rantingrickjohnson@gmail.com> - 2014-11-20 19:53 -0800
      Re: PyWart: "Python's import statement and the history of external dependencies" Tim Chase <python.list@tim.thechases.com> - 2014-11-21 04:26 -0600
        Re: PyWart: "Python's import statement and the history of external dependencies" Rick Johnson <rantingrickjohnson@gmail.com> - 2014-11-21 07:52 -0800
          Re: PyWart: "Python's import statement and the history of external dependencies" Tim Chase <python.list@tim.thechases.com> - 2014-11-21 10:12 -0600
          Re: PyWart: "Python's import statement and the history of external dependencies" Ian Kelly <ian.g.kelly@gmail.com> - 2014-11-21 10:42 -0700
      Re: PyWart: "Python's import statement and the history of external dependencies" Ned Batchelder <ned@nedbatchelder.com> - 2014-11-21 06:32 -0500
      Re: PyWart: "Python's import statement and the history of external dependencies" Ian Kelly <ian.g.kelly@gmail.com> - 2014-11-21 08:33 -0700
        Re: PyWart: "Python's import statement and the history of external dependencies" Rick Johnson <rantingrickjohnson@gmail.com> - 2014-11-21 10:24 -0800
          Re: PyWart: "Python's import statement and the history of external dependencies" Chris Angelico <rosuav@gmail.com> - 2014-11-22 05:34 +1100
          Re: PyWart: "Python's import statement and the history of external dependencies" Michael Torrie <torriem@gmail.com> - 2014-11-21 12:05 -0700
            Re: PyWart: "Python's import statement and the history of external dependencies" Rick Johnson <rantingrickjohnson@gmail.com> - 2014-11-21 12:29 -0800
              Re: PyWart: "Python's import statement and the history of external dependencies" Michael Torrie <torriem@gmail.com> - 2014-11-21 15:54 -0700
          Re: PyWart: "Python's import statement and the history of external dependencies" Ian Kelly <ian.g.kelly@gmail.com> - 2014-11-21 12:23 -0700
            Re: PyWart: "Python's import statement and the history of external dependencies" Rick Johnson <rantingrickjohnson@gmail.com> - 2014-11-21 14:25 -0800
              Re: PyWart: "Python's import statement and the history of external dependencies" Rick Johnson <rantingrickjohnson@gmail.com> - 2014-11-21 15:21 -0800
                Re: PyWart: "Python's import statement and the history of external dependencies" Chris Angelico <rosuav@gmail.com> - 2014-11-22 10:52 +1100
                Re: PyWart: "Python's import statement and the history of external dependencies" Rick Johnson <rantingrickjohnson@gmail.com> - 2014-11-21 17:07 -0800
                Re: PyWart: "Python's import statement and the history of external dependencies" Chris Angelico <rosuav@gmail.com> - 2014-11-22 13:36 +1100
                Re: PyWart: "Python's import statement and the history of external dependencies" Ian Kelly <ian.g.kelly@gmail.com> - 2014-11-22 02:27 -0700
                Re: PyWart: "Python's import statement and the history of external dependencies" sohcahtoa82@gmail.com - 2014-11-21 16:33 -0800
                Import a module from a specific file path (was: PyWart: "Python's import statement and the history of external dependencies") Ben Finney <ben+python@benfinney.id.au> - 2014-11-22 11:37 +1100
                Re: Import a module from a specific file path Marko Rauhamaa <marko@pacujo.net> - 2014-11-22 08:28 +0200
                Re: Import a module from a specific file path (was: PyWart: "Python's import statement and the history of external dependencies") Chris Angelico <rosuav@gmail.com> - 2014-11-22 13:32 +1100
                Re: Import a module from a specific file path Ben Finney <ben+python@benfinney.id.au> - 2014-11-22 17:46 +1100
              Re: PyWart: "Python's import statement and the history of external dependencies" Ian Kelly <ian.g.kelly@gmail.com> - 2014-11-21 17:32 -0700
                Re: PyWart: "Python's import statement and the history of external dependencies" Rick Johnson <rantingrickjohnson@gmail.com> - 2014-11-21 17:48 -0800
          Re: PyWart: "Python's import statement and the history of external dependencies" Dennis Lee Bieber <wlfraed@ix.netcom.com> - 2014-11-21 15:38 -0500
        Re: PyWart: "Python's import statement and the history of external dependencies" Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2014-11-22 23:25 +1100
          Re: PyWart: "Python's import statement and the history of external dependencies" Chris Angelico <rosuav@gmail.com> - 2014-11-23 00:00 +1100
            Re: PyWart: "Python's import statement and the history of external dependencies" Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2014-11-23 17:30 +1100
              Re: PyWart: "Python's import statement and the history of external dependencies" Rustom Mody <rustompmody@gmail.com> - 2014-11-22 22:44 -0800
              Re: PyWart: "Python's import statement and the history of external dependencies" Chris Angelico <rosuav@gmail.com> - 2014-11-23 17:56 +1100
              Re: PyWart: "Python's import statement and the history of external dependencies" Chris Angelico <rosuav@gmail.com> - 2014-11-23 17:59 +1100
                Re: PyWart: "Python's import statement and the history of external   dependencies" Gregory Ewing <greg.ewing@canterbury.ac.nz> - 2014-11-24 11:37 +1300
                Re: PyWart: "Python's import statement and the history of external dependencies" Rick Johnson <rantingrickjohnson@gmail.com> - 2014-11-23 22:25 -0800
                Re: PyWart: "Python's import statement and the history of external dependencies" Chris Angelico <rosuav@gmail.com> - 2014-11-24 17:34 +1100
                Re: PyWart: "Python's import statement and the history of external dependencies" Mark Lawrence <breamoreboy@yahoo.co.uk> - 2014-11-24 10:34 +0000
                Re: PyWart: "Python's import statement and the history of external dependencies" Rick Johnson <rantingrickjohnson@gmail.com> - 2014-11-24 08:51 -0800
                Re: PyWart: "Python's import statement and the history of external dependencies" Ned Batchelder <ned@nedbatchelder.com> - 2014-11-24 12:06 -0500
                Re: PyWart: "Python's import statement and the history of external dependencies" Robin Becker <robin@reportlab.com> - 2014-11-24 17:07 +0000
                Re: PyWart: "Python's import statement and the history of external dependencies" Marko Rauhamaa <marko@pacujo.net> - 2014-11-24 19:08 +0200
                Re: PyWart: "Python's import statement and the history of external dependencies" Rustom Mody <rustompmody@gmail.com> - 2014-11-24 09:38 -0800
                Re: PyWart: "Python's import statement and the history of external dependencies" Ian Kelly <ian.g.kelly@gmail.com> - 2014-11-24 15:34 -0700
              Re: PyWart: "Python's import statement and the history of external dependencies" Ben Finney <ben+python@benfinney.id.au> - 2014-11-23 18:43 +1100
              Re: PyWart: "Python's import statement and the history of external dependencies" Chris Angelico <rosuav@gmail.com> - 2014-11-23 18:51 +1100
              Re: PyWart: "Python's import statement and the history of external dependencies" Dennis Lee Bieber <wlfraed@ix.netcom.com> - 2014-11-23 11:23 -0500
              Re: PyWart: "Python's import statement and the history of external dependencies" Chris Angelico <rosuav@gmail.com> - 2014-11-24 03:36 +1100
          Re: PyWart: "Python's import statement and the history of external dependencies" Tim Chase <python.list@tim.thechases.com> - 2014-11-22 15:27 -0600
            Re: PyWart: "Python's import statement and the history of external dependencies" Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2014-11-23 12:00 +1100
              Re: PyWart: "Python's import statement and the history of external dependencies" Tim Chase <python.list@tim.thechases.com> - 2014-11-22 19:33 -0600

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