control.Coverage._init: check "source" is a directory, not just it exists; there could be a file with that namecheck-source-isdir

1 files changed, 1 insertions, 1 deletions

diff --git a/coverage/control.py b/coverage/control.py
index 1b7edc4..992ca58 100644
--- a/coverage/control.py
+++ b/coverage/control.py
@@ -219,7 +219,7 @@ class Coverage(object):
         self.source = []
         self.source_pkgs = []
         for src in self.config.source or []:
-            if os.path.exists(src):
+            if os.path.isdir(src):
                 self.source.append(files.canonical_filename(src))
             else:
                 self.source_pkgs.append(src)