Issue #17011: Fix caching of xpath path when namespaces are present.

Thanks to Stefan Behnel for the report and proposed solution & test.

1 files changed, 14 insertions, 0 deletions

diff --git a/Lib/test/test_xml_etree.py b/Lib/test/test_xml_etree.py
index 4c2e26f..402bc2d 100644
--- a/Lib/test/test_xml_etree.py
+++ b/Lib/test/test_xml_etree.py
@@ -1679,6 +1679,20 @@ class ElementFindTest(unittest.TestCase):
             summarize_list(e.findall(".//{http://effbot.org/ns}tag")),
             ['{http://effbot.org/ns}tag'] * 3)
 
+    def test_findall_different_nsmaps(self):
+        root = ET.XML('''
+            <a xmlns:x="X" xmlns:y="Y">
+                <x:b><c/></x:b>
+                <b/>
+                <c><x:b/><b/></c><y:b/>
+            </a>''')
+        nsmap = {'xx': 'X'}
+        self.assertEqual(len(root.findall(".//xx:b", namespaces=nsmap)), 2)
+        self.assertEqual(len(root.findall(".//b", namespaces=nsmap)), 2)
+        nsmap = {'xx': 'Y'}
+        self.assertEqual(len(root.findall(".//xx:b", namespaces=nsmap)), 1)
+        self.assertEqual(len(root.findall(".//b", namespaces=nsmap)), 2)
+
     def test_bad_find(self):
         e = ET.XML(SAMPLE_XML)
         with self.assertRaisesRegex(SyntaxError, 'cannot use absolute path'):