Fix deprecated use of '\' as described in https://bugs.python.org/issue27364 (Deprecated in Python 3.6, will become SyntaxError in a future release)

1 files changed, 2 insertions, 2 deletions

diff --git a/src/examples/invRegex.py b/src/examples/invRegex.py
index b6fe1f1..aea3b55 100644
--- a/src/examples/invRegex.py
+++ b/src/examples/invRegex.py
@@ -188,9 +188,9 @@ def count(gen):
     return sum(1 for _ in gen)

 

 def invert(regex):

-    """Call this routine as a generator to return all the strings that

+    r"""Call this routine as a generator to return all the strings that

        match the input regular expression.

-           for s in invert("[A-Z]{3}\d{3}"):

+           for s in invert(r"[A-Z]{3}\d{3}"):

                print s

     """

     invReGenerator = GroupEmitter(parser().parseString(regex)).makeGenerator()