make some regexps raw strings

to avoid DeprecationWarnings with Python 3.6

make some regexps raw strings
6669513f · Michael Hudson-Doyle · 06cd421a · 6669513f
Commit 6669513f authored 7 years ago by Michael Hudson-Doyle
--- a/run_tests.py
+++ b/run_tests.py
@@ -6,8 +6,8 @@ import re
 PyCF_ONLY_AST = 1024
  
 IS_PY3 = sys.version_info[0] == 3
-IS_PY3_TEST = re.compile("^#\s*python3\s*only")
-IS_PY2_TEST = re.compile("^#\s*python2\s*only")
+IS_PY3_TEST = re.compile(r"^#\s*python3\s*only")
+IS_PY2_TEST = re.compile(r"^#\s*python2\s*only")
  
  
 def main():