Fix manual docker command output for Python.
diff --git a/tools/interop_matrix/client_matrix.py b/tools/interop_matrix/client_matrix.py
index 4345031..01fa5f3 100644
--- a/tools/interop_matrix/client_matrix.py
+++ b/tools/interop_matrix/client_matrix.py
@@ -27,7 +27,7 @@
     'cxx': ['cxx'],             # This is actually debian8.
     'go': ['go1.7', 'go1.8'],
     'java': ['java_oracle8'],
-    #'python': ['python'],  # All python versions fail the tests due to timeout.
+    'python': ['python'],
     'node': ['node'],
     'ruby': ['ruby'],
     'php': ['php', 'php7'],
@@ -64,14 +64,14 @@
         'v1.6.1',
         'v1.7.0',
     ],
-    #'python': [
-        #'v1.0.x',  #Fail to run the test. #13230.
-    #    'v1.1.4',
-    #    'v1.2.5',
-    #    'v1.3.9',
-    #    'v1.4.2',
-    #    'v1.6.6',
-    #],
+    'python': [
+        'v1.0.x',
+        'v1.1.4',
+        'v1.2.5',
+        'v1.3.9',
+        'v1.4.2',
+        'v1.6.6',
+    ],
     'node': [
         'v1.0.1',
         'v1.1.4',