[flakiness_cli] Run using vpython

Run the main flakiness_cli script using vpython. Also add pandas (and
dependencies) to src/.vpython itself.

Bug: 875251,878994
Change-Id: Ib0160b18c9bd2423659ac13d24979eccf91c2d7c

TBR=nednguyen@chromium.org

Change-Id: Ib0160b18c9bd2423659ac13d24979eccf91c2d7c
Reviewed-on: https://chromium-review.googlesource.com/c/1238569
Commit-Queue: Robbie Iannucci <iannucci@chromium.org>
Reviewed-by: Ned Nguyen <nednguyen@google.com>
Cr-Commit-Position: refs/heads/master@{#604795}

.vpython

@@ -134,6 +134,38 @@ wheel: <
   version: "version:0.10.3"
 >
 
+# Used by:
+#   tools/perf/flakiness_cli
+wheel: <
+  name: "infra/python/wheels/pandas/${vpython_platform}"
+  version: "version:0.23.4"
+  match_tag: <
+    platform: "win32"
+  >
+  match_tag: <
+    platform: "win_amd64"
+  >
+  match_tag: <
+    abi: "cp27mu"
+    platform: "manylinux1_i686"
+  >
+  match_tag: <
+    abi: "cp27mu"
+    platform: "manylinux1_x86_64"
+  >
+  match_tag: <
+    platform: "macosx_10_6_intel"
+  >
+>
+wheel: <
+  name: "infra/python/wheels/pytz-py2_py3"
+  version: "version:2018.4"
+>
+wheel: <
+  name: "infra/python/wheels/python-dateutil-py2_py3"
+  version: "version:2.7.3"
+>
+
 # Used by:
 #   chrome/test/vr/perf/latency/run_latency_test.py
 wheel: <

tools/perf/flakiness_cli

-#!/usr/bin/env python
+#!/usr/bin/env vpython
 # Copyright 2018 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
@@ -60,5 +60,4 @@ def main():
 
 
 if __name__ == '__main__':
-  core.CheckDependencies()
   sys.exit(main())

tools/perf/test_results/analysis.py

@@ -4,12 +4,8 @@
 
 import fnmatch
 
-try:
-  import numpy
-  import pandas
-except ImportError:
-  numpy = None
-  pandas = None
+import numpy  # pylint: disable=import-error
+import pandas  # pylint: disable=import-error
 
 
 SECONDS_IN_A_DAY = 60 * 60 * 24

tools/perf/test_results/analysis_unittest.py

@@ -8,7 +8,6 @@ from test_results import analysis
 from test_results import frames
 
 
-@unittest.skipIf(frames.pandas is None, 'pandas module not available')
 class TestAnalysis(unittest.TestCase):
   def testFilterBy(self):
     builders = frames.pandas.DataFrame.from_records([

tools/perf/test_results/core.py

@@ -4,18 +4,11 @@
 
 import datetime
 import hashlib
-import sys
 
 from test_results import api
 from test_results import frames
 
 
-def CheckDependencies():
-  """Check that module dependencies are satisfied, otherwise exit with error."""
-  if frames.pandas is None:
-    sys.exit('ERROR: This tool requires pandas to run, try: pip install pandas')
-
-
 def GetBuilders():
   """Get the builders data frame and keep a cached copy."""
   def make_frame():

tools/perf/test_results/frames.py

@@ -7,10 +7,7 @@
 import datetime
 import os
 
-try:
-  import pandas
-except ImportError:
-  pandas = None
+import pandas  # pylint: disable=import-error
 
 
 CACHE_DIR = os.path.normpath(

tools/perf/test_results/frames_unittest.py

@@ -13,7 +13,6 @@ import mock
 from test_results import frames
 
 
-@unittest.skipIf(frames.pandas is None, 'pandas module not available')
 class TestDataFrames(unittest.TestCase):
   def testBuildersDataFrame(self):
     sample_data = {