diff --git a/Lib/urllib/request.py b/Lib/urllib/request.py
index c701360c945..c912833cb58 100644
--- a/Lib/urllib/request.py
+++ b/Lib/urllib/request.py
@@ -1965,7 +1965,7 @@ def retry_https_basic_auth(self, url, realm, data=None):
         else:
             return self.open(newurl, data)
 
-    def get_user_passwd(self, host, realm, clear_cache = 0):
+    def get_user_passwd(self, host, realm, clear_cache=0):
         key = realm + '@' + host.lower()
         if key in self.auth_cache:
             if clear_cache: