Merge pyflakes-permission-denied-2841

Author: exarkun
Reviewer: jonathanj
Fixes: #2841

Handle permission errors when trying to read source files.

1 files changed, 4 insertions, 3 deletions

diff --git a/pyflakes/scripts/pyflakes.py b/pyflakes/scripts/pyflakes.py
index e0cd77d..01cef06 100644
--- a/pyflakes/scripts/pyflakes.py
+++ b/pyflakes/scripts/pyflakes.py
@@ -47,12 +47,13 @@ def checkPath(filename):
 
     @return: the number of warnings printed
     """
-    if os.path.exists(filename):
+    try:
         return check(file(filename, 'U').read() + '\n', filename)
-    else:
-        print >> sys.stderr, '%s: no such file' % (filename,)
+    except IOError, msg:
+        print >> sys.stderr, "%s: %s" % (filename, msg.args[1])
         return 1
 
+
 def main():
     warnings = 0
     args = sys.argv[1:]