[Python-Dev] [Python-checkins] cpython: Modernize modulefinder module and tests a bit.
Ezio Melotti
ezio.melotti at gmail.com
Sat Jul 30 21:05:20 CEST 2011
Hi,
On 29/07/2011 15.35, eric.araujo wrote:
> http://hg.python.org/cpython/rev/1521d9837d16
> changeset: 71569:1521d9837d16
> user: Éric Araujo<merwok at netwok.org>
> date: Thu Jul 28 23:35:29 2011 +0200
> summary:
> Modernize modulefinder module and tests a bit.
>
> The tests don’t use an internal distutils function anymore, and use
> regular assertEqual with sorted lists instead of a convoluted manual
> diff.
>
> files:
> Lib/modulefinder.py | 15 ++----
> Lib/test/test_modulefinder.py | 48 +++++++++++-----------
> 2 files changed, 31 insertions(+), 32 deletions(-)
>
>
> diff --git a/Lib/modulefinder.py b/Lib/modulefinder.py
> --- a/Lib/modulefinder.py
> +++ b/Lib/modulefinder.py
> @@ -1,6 +1,5 @@
> """Find modules used by a script, using introspection."""
>
> -from __future__ import generators
> import dis
> import imp
> import marshal
> @@ -9,8 +8,6 @@
> import types
> import struct
>
> -READ_MODE = "rU"
> -
> # XXX Clean up once str8's cstor matches bytes.
> LOAD_CONST = bytes([dis.opname.index('LOAD_CONST')])
> IMPORT_NAME = bytes([dis.opname.index('IMPORT_NAME')])
> @@ -29,8 +26,7 @@
>
> # A Public interface
> def AddPackagePath(packagename, path):
> - paths = packagePathMap.get(packagename, [])
> - paths.append(path)
> + paths = packagePathMap.setdefault(packagename, []).append(path)
I'm assuming that packagePathMap is a dict that might contain or not a
*packagename* key that maps to a list of paths.
Now, unless I'm missing something, the old code assigned to *paths* the
list of paths or [] if it wasn't there, and then appended *path* to it.
AFAICS, the new code introduced two changes:
1) the packagename key is added to the dict if it was missing -- and
this seems reasonable;
2) append is now on the same line, it returns None, and None is
assigned to *paths* -- and this seems wrong;
> packagePathMap[packagename] = paths
Also this is not necessary anymore if you use setdefault.
> replacePackageMap = {}
> @@ -106,14 +102,14 @@
>
> [...]
Best Regards,
Ezio Melotti
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