errno constants

fs/commands/fsserve.py

@@ -5,6 +5,7 @@ import sys
 from fs.opener import opener
 from fs.commands.runner import Command
 from fs.utils import print_fs
+import errno
 
 
 class FSServe(Command):
@@ -90,7 +91,7 @@ Serves the contents of PATH with one of a number of methods"""
                 self.error("Server type '%s' not recognised\n" % options.type)
 
         except IOError, e:
-            if e.errno == 13:
+            if e.errno == errno.EACCES:
                 self.error('Permission denied\n')
                 return 1
             else: