luci-py: Making __file__ usage unicode safe.

client/tools/fleet.py

 #!/usr/bin/env python
 # Copyright 2015 The LUCI Authors. All rights reserved.
 # Use of this source code is governed under the Apache License, Version 2.0
 # that can be found in the LICENSE file.
 
 """Calculate statistics about tasks.
 
 Saves the data fetched from the server into a json file to enable reprocessing
 the data without having to always fetch from the server.
 """
 
 import datetime
 import json
 import logging
 import optparse
 import os
 import subprocess
 import sys
 import urllib
 
 
-CLIENT_DIR = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
+CLIENT_DIR = os.path.dirname(os.path.dirname(os.path.abspath(
+    __file__.decode(sys.getfilesystemencoding()))))
 
 _EPOCH = datetime.datetime.utcfromtimestamp(0)
 
 # Type of bucket to use.
 MAJOR_OS, MINOR_OS, MINOR_OS_GPU = range(3)
 
 
 def seconds_to_timedelta(seconds):
   """Converts seconds in datetime.timedelta, stripping sub-second precision.
 
@@ skipping 162 matching lines @@
     parser.error('--swarming is required.')
 
   with open(options.json, 'rb') as f:
     items = json.load(f)['items']
   present_data(items, options.bucket, options.count)
   return 0
 
 
 if __name__ == '__main__':
   sys.exit(main())