From: Éric Araujo <merwok@netwok.org>
Date: Fri, 29 Jul 2011 00:20:39 +0000 (+0200)
Subject: Let pysetup list exit with a non-zero code when no result is found (#11409).
X-Git-Tag: v3.3.0a1~1819^2~3
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=73c175f5a0a7e749357e74f518c89b716b7e34b2;p=python

Let pysetup list exit with a non-zero code when no result is found (#11409).

“pysetup list” or “pysetup list --all” will continue to return 0 if no
distribution is found (it’s not an error), but “pysetup list
some.project” will now exit with 1 if no matching installed distribution
is found.  Based on a patch by Kelsey Hightower.
---

diff --git a/Lib/packaging/run.py b/Lib/packaging/run.py
index 3e720cf7e8..bcc3c218e3 100644
--- a/Lib/packaging/run.py
+++ b/Lib/packaging/run.py
@@ -358,8 +358,10 @@ def _list(dispatcher, args, **kw):
     dists = get_distributions(use_egg_info=True)
     if 'all' in opts or opts['args'] == []:
         results = dists
+        listall = True
     else:
         results = [d for d in dists if d.name.lower() in opts['args']]
+        listall = False
 
     number = 0
     for dist in results:
@@ -368,7 +370,11 @@ def _list(dispatcher, args, **kw):
 
     print()
     if number == 0:
-        print('Nothing seems to be installed.')
+        if listall:
+            print('Nothing seems to be installed.')
+        else:
+            print('No matching distribution found.')
+            return 1
     else:
         print('Found %d projects installed.' % number)