diff --git a/tools/interop_matrix/client_matrix.py b/tools/interop_matrix/client_matrix.py
index b3a500d730d..6bd7ff6406d 100644
--- a/tools/interop_matrix/client_matrix.py
+++ b/tools/interop_matrix/client_matrix.py
@@ -27,7 +27,7 @@ LANG_RUNTIME_MATRIX = {
     'cxx': ['cxx'],             # This is actually debian8.
     'go': ['go1.7', 'go1.8'],
     'java': ['java_oracle8'],
-    'python': ['python'],
+    #'python': ['python'],  # All python versions fail the tests due to timeout.
     'node': ['node'],
     'ruby': ['ruby'],
     'php': ['php', 'php7'],
@@ -64,14 +64,14 @@ LANG_RELEASE_MATRIX = {
         'v1.6.1',
         'v1.7.0',
     ],
-    'python': [
+    #'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',
-    ],
+    #    'v1.1.4',
+    #    'v1.2.5',
+    #    'v1.3.9',
+    #    'v1.4.2',
+    #    'v1.6.6',
+    #],
     'node': [
         'v1.0.1',
         'v1.1.4',
diff --git a/tools/interop_matrix/run_interop_matrix_tests.py b/tools/interop_matrix/run_interop_matrix_tests.py
index 779d3d0b6a3..dce1033add8 100755
--- a/tools/interop_matrix/run_interop_matrix_tests.py
+++ b/tools/interop_matrix/run_interop_matrix_tests.py
@@ -172,7 +172,6 @@ def run_tests_for_lang(lang, runtime, images):
     jobset.message('START', 'Testing %s' % image, do_newline=True)
     # Download the docker image before running each test case.
     subprocess.check_call(['gcloud', 'docker', '--', 'pull', image])
-    #_docker_images_cleanup.append(image)
     suite_name = '%s__%s_%s' % (lang, runtime, release)
     job_spec_list = find_test_cases(lang, runtime, release, suite_name)