URL-encoded attachment id resolve patch

wsdl_messages_xop.py.patch

Index: zeep/wsdl/messages/xop.py
IDEA additional info:
Subsystem: com.intellij.openapi.diff.impl.patch.CharsetEP
<+>UTF-8
===================================================================
--- zeep/wsdl/messages/xop.py	(date 1539132819497)
+++ zeep/wsdl/messages/xop.py	(date 1539132819497)
@@ -1,4 +1,5 @@
 import base64
+from urllib.parse import unquote
 
 
 def process_xop(document, message_pack):
@@ -11,12 +12,14 @@
 
     for xop_node in xop_nodes:
         href = xop_node.get('href')
+        href = unquote(href)
         if href.startswith('cid:'):
             href = '<%s>' % href[4:]
 
         value = message_pack.get_by_content_id(href)
         if not value:
-            raise ValueError("No part found for: %r" % xop_node.get('href'))
+            raise ValueError("No part found for: %r" % unquote(
+                xop_node.get('href')))
         num_replaced += 1
 
         xop_parent = xop_node.getparent()

That did the trick! Thanks!