[Python-Dev] ImportWarning flood (original) (raw)

Ralf W. Grosse-Kunstleve rwgk at yahoo.com
Thu Jun 22 10:26:15 CEST 2006

--- "Martin v. Löwis" <martin at v.loewis.de> wrote:

Ralf W. Grosse-Kunstleve wrote: > Is there a way to set the warning options via an environment variable?

This is off-topic for python-dev,

What is the channel I should use? (I am testing a beta 1.)

but: why don't switch off the warnings in the code?

We support installation from sources with the native Python if available. Any Python >= 2.2.1 works. It would be frustrating if we had to give up on this just because of a warning designed for newcomers.

In our applications we typically address this type of problem with informative exceptions. For example, if a Boost.Python wrapped C++ object doesn't support pickling:

RuntimeError: Pickling of "cctbx_sgtbx_ext.space_group_symbols" instances is not enabled (http://www.boost.org/libs/python/doc/v2/pickle.html)

Something like this could help newcomers just the same without impacting experienced users with large, complex package structures. E.g.:

import mypackage.foo Traceback (most recent call last): File "", line 1, in ? ImportError: No module named mypackage.foo Note that subdirectories are searched for imports only if they contain an init.py file: http://www.python.org/doc/essays/packages.html

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