[diffoscope] 01/01: Fix lazy expression, filter is lazy in python 3

[Ximin Luo]

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infinity0 pushed a commit to branch master
in repository diffoscope.

commit 737fc3be9130f4b07d8c9e932f24ba5f8f8a4153
Author: Ximin Luo <infinity0 at debian.org>
Date:   Fri Jan 27 16:23:25 2017 +0100

    Fix lazy expression, filter is lazy in python 3
---
 diffoscope/comparators/utils/specialize.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/diffoscope/comparators/utils/specialize.py b/diffoscope/comparators/utils/specialize.py
index ecb3101..7a3c3e9 100644
--- a/diffoscope/comparators/utils/specialize.py
+++ b/diffoscope/comparators/utils/specialize.py
@@ -40,7 +40,7 @@ def specialize(file):
         else:
             re_tests = [(cls.RE_FILE_TYPE, file.magic_file_type),
                         (cls.RE_FILE_EXTENSION, file.name)]
-            re_tests = filter(lambda pair: pair[0], re_tests)
+            re_tests = list(filter(lambda pair: pair[0], re_tests))
             if re_tests: # if neither are defined, it's *not* a match
                 flag = all(bool(pair[0].search(pair[1])) for pair in re_tests)
 

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