Issue #15888: fixing problems in ipaddress doctests. Patch by Chris Jerdonek
diff --git a/Lib/ipaddress.py b/Lib/ipaddress.py
index 22efb09..532e44e 100644
--- a/Lib/ipaddress.py
+++ b/Lib/ipaddress.py
@@ -206,10 +206,11 @@
     """Summarize a network range given the first and last IP addresses.
 
     Example:
-        >>> summarize_address_range(IPv4Address('192.0.2.0'),
-            IPv4Address('192.0.2.130'))
+        >>> list(summarize_address_range(IPv4Address('192.0.2.0'),
+        ...                              IPv4Address('192.0.2.130')))
+        ...                                #doctest: +NORMALIZE_WHITESPACE
         [IPv4Network('192.0.2.0/25'), IPv4Network('192.0.2.128/31'),
-        IPv4Network('192.0.2.130/32')]
+         IPv4Network('192.0.2.130/32')]
 
     Args:
         first: the first IPv4Address or IPv6Address in the range.