Flush stdout after printing in python to get sane order of output

tools/bots/linux_distribution_support.py

 #!/usr/bin/python
 
 # Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
 # for details. All rights reserved. Use of this source code is governed by a
 # BSD-style license that can be found in the LICENSE file.
 
 """
 Buildbot steps for src tarball generation and debian package generation
 
 Package up the src of the dart repo and create a debian package.
@@ skipping 57 matching lines @@
   filename = os.path.join(tempdir, 'test.dart')
   with open(filename, 'w') as f:
     f.write('import "dart:html";\n\n')
     f.write('void main() {\n')
     f.write('  print("Hello world");\n')
     f.write('}')
   return filename
 
 def Run(args):
   print "Running: %s" % ' '.join(args)
+  sys.stdout.flush()
   bot.RunProcess(args)
 
 def TestInstallation(assume_installed=True):
   paths = ['/usr/bin/dart']
   for tool in ['dart2js', 'pub', 'dart', 'dartanalyzer']:
     paths.append(os.path.join('/usr/lib/dart/bin', tool))
   for path in paths:
     if os.path.exists(path):
       if not assume_installed:
         print 'Assumed not installed, found %s' % path
@@ skipping 80 matching lines @@
     bot_name, _ = bot.GetBotName()
     channel = bot_utils.GetChannelFromName(bot_name)
     if channel != bot_utils.Channel.BLEEDING_EDGE:
      ArchiveArtifacts(tarfile, builddir, channel, build_info.builder_tag)
     else:
       print 'Not uploading artifacts on bleeding edge'
 
 if __name__ == '__main__':
   # We pass in None for build_step to avoid building the sdk.
   bot.RunBot(SrcConfig, SrcSteps, build_step=None)