[Python-Dev] Change PEP 399 import recommendation (original) (raw)

Stefan Behnel stefan_ml at behnel.de
Sun Oct 13 10🔞49 CEST 2013

Antoine Pitrou, 12.10.2013 23:40:

On Sat, 12 Oct 2013 23:35:23 +0200 Christian Heimes wrote:

A directory with pure Python modules is less cumbersome than a couple of facade modules or intended code in try/except ImportError blocks. I don't find it cumbersome to be explicit here. It makes it obvious what happens. It also makes it extra easy to import the pure Python if desired (for example for unit tests, or for benchmarking).

I agree. I find it much easier to read a plain and obvious

try:
   from _cmodule import *
except ImportError:
   from _pymodule import *

in a facade module than

# lots and lots
# of unused
# Python code
# here ...

# ... and then this, well hidden at the end, telling
# me that I just waded through the entirely wrong code:

try:
   from _cmodule import *
except ImportError:
   pass

As I said, that's different for the case where the C module replaces only a somewhat small part of the Python code, but for the case of an (almost) complete replacement, I would like to see the 3-files approach as the One Way To Do It.

Stefan

More information about the Python-Dev mailing list