[diffoscope] 01/01: contextlib.contextmanager yields need to be wrapped in a try-finally block

[Ximin Luo]

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infinity0 pushed a commit to branch experimental
in repository diffoscope.

commit 40c31ad79e95f8c47f162910bc542bd9be7f9c6b
Author: Ximin Luo <infinity0 at debian.org>
Date:   Mon May 29 22:28:29 2017 +0200

    contextlib.contextmanager yields need to be wrapped in a try-finally block
---
 tests/utils/data.py | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/tests/utils/data.py b/tests/utils/data.py
index dc43f0d..b2d7e06 100644
--- a/tests/utils/data.py
+++ b/tests/utils/data.py
@@ -50,16 +50,18 @@ def get_data(filename):
         return f.read()
 
 
+# https://code.activestate.com/recipes/576620-changedirectory-context-manager/#c3
 @contextlib.contextmanager
 def cwd_data():
     """A context manager which changes the working directory to the given
     path, and then changes it back to its previous value on exit.
-
     """
     prev_cwd = os.getcwd()
     os.chdir(data(""))
-    yield
-    os.chdir(prev_cwd)
+    try:
+        yield
+    finally:
+        os.chdir(prev_cwd)
 
 
 def load_fixture(filename):

-- 
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