1 files changed, 3 insertions, 0 deletions

diff --git a/parse/tuple_table.py b/parse/tuple_table.py
index b56fa6c..6363b80 100644
--- a/parse/tuple_table.py
+++ b/parse/tuple_table.py
@@ -27,6 +27,9 @@ class ColMap(object):
                
         return key
 
+    def __contains__(self, col):
+        return col in self.rev_map
+
     def get_map(self, tuple):
         map = {}
         for i in range(0, len(tuple)):