[Python-Dev] Python startup time (original) (raw)

Eric Snow ericsnowcurrently at gmail.com
Thu Oct 10 02🔞20 CEST 2013

On Wed, Oct 9, 2013 at 8:30 AM, Christian Heimes <christian at python.org> wrote:

The os module imports MutableMapping from collections.abc. That import adds collections, collections.abc and eight more modules. I'm not sure if we can do anything about it, though.

Well, that depends on how much we want to eliminate those 10 imports. :) Both environ and environb could be turned into lazy wrappers around an _Environ-created-when-needed. If we used a custom module type for os [1], then adding descriptors for the two attributes is a piece of cake. As it is, with a little metaclass magic (or even with explicit wrapping of the various dunder methods), we could drop those 10 imports from startup.

-eric

[1] This probably wouldn't be a great idea considering that undoubtedly some code depends on "type(os) is types.ModuleType".

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