https://docs.python.org/3/whatsnew/3.6.html#deprecated-python-behavior
---
 bin/python/isc/coverage.py.in | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/bin/python/isc/coverage.py.in b/bin/python/isc/coverage.py.in
index 00eb9e0..9d06b9c 100644
--- a/bin/python/isc/coverage.py.in
+++ b/bin/python/isc/coverage.py.in
@@ -73,7 +73,7 @@ def parse_time(s):
         pass
 
     # try to parse as a number with a suffix indicating unit of time
-    r = re.compile('([0-9][0-9]*)\s*([A-Za-z]*)')
+    r = re.compile(r'([0-9][0-9]*)\s*([A-Za-z]*)')
     m = r.match(s)
     if not m:
         raise ValueError("Cannot parse %s" % s)
-- 
2.9.3