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

Stefan Krah stefan at bytereef.org
Sun Oct 13 13:46:19 CEST 2013

Stefan Behnel <stefan_ml at behnel.de> wrote:

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

I don't care much about the directory versus facade module approach, but the above is really worth noting. For decimal, I find the three-files approach easier to manage: All private symbols of the Python version are automatically no longer imported; they don't have to be deleted when the C version is used. Also, the new scheme uncovered some missing symbols in all.

The downside for CPython is just a slightly more cluttered directory listing (and the doctests get a bit messier).

The other implementations could import their (hypothetical) accelerators in the facade module and override selected symbols there (I think Nick mentioned that already).

Stefan Krah

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