Deal with underscores and numbers

Author: nedbat

gend.py

@@ -23,9 +23,9 @@ def humps(s):
         yield s[a:b]
 
 def parts(s):
-    for word in re.split(r"\W", s):
+    for word in re.split(r"[\W_]", s):
         for hump in humps(word):
-            yield hump
+            yield hump.rstrip('012345679')
 
 TITLES = {
     'ms.': 'female',

test_gend.py

@@ -15,6 +15,8 @@
     ('Dr. Erik Nelson', 'male'),
     ('Dr. Mark A. Friedman', 'male'),
     ('Rev. Johnny Healey', 'male'),
+    ('john_smith', 'male'),
+    ('susie123', 'female'),
 ])
 def test_guess_gender(name, gender):
     assert guess_gender(name) == gender