When looking for python files, don't take suspicious ones. Fixes #168.

1 files changed, 4 insertions, 1 deletions

diff --git a/coverage/files.py b/coverage/files.py
index 81ec196..e6dc4aa 100644
--- a/coverage/files.py
+++ b/coverage/files.py
@@ -215,5 +215,8 @@ def find_python_files(dirname):
             del dirnames[:]
             continue
         for filename in filenames:
-            if fnmatch.fnmatch(filename, "*.py"):
+            # We're only interested in files that look like reasonable Python
+            # files: Must end with .py, and must not have certain funny
+            # characters that probably mean they are editor junk.
+            if re.match(r"^[^.#~!$@%^&*()+=,]+\.py$", filename):
                 yield os.path.join(dirpath, filename)