diff -r 8197b395710e -r 4aa72cdf616f hgext/bugzilla.py
--- a/hgext/bugzilla.py	Tue Oct 08 19:35:30 2019 -0700
+++ b/hgext/bugzilla.py	Sun Oct 06 20:17:41 2019 -0700
@@ -731,13 +731,13 @@
 # inheritance with a new-style class.
 class cookietransport(cookietransportrequest, xmlrpclib.Transport):
     def __init__(self, use_datetime=0):
-        if util.safehasattr(xmlrpclib.Transport, b"__init__"):
+        if util.safehasattr(xmlrpclib.Transport, "__init__"):
             xmlrpclib.Transport.__init__(self, use_datetime)
 
 
 class cookiesafetransport(cookietransportrequest, xmlrpclib.SafeTransport):
     def __init__(self, use_datetime=0):
-        if util.safehasattr(xmlrpclib.Transport, b"__init__"):
+        if util.safehasattr(xmlrpclib.Transport, "__init__"):
             xmlrpclib.SafeTransport.__init__(self, use_datetime)