FYI, I encountered this error, which failed to import a module, perhaps some developers have installed this on their machine? Was this a recent change, should a dependency be added to setup.py?
Running from a clean git branch in a virtualenv. python setup.py test -s apache_beam.runners.portability.fun_api_runner_test Traceback (most recent call last): File "setup.py", line 208, in <module> 'test': generate_protos_first(test), File "/usr/local/google/home/ajamato/beam_git/beam/venv/local/lib/python2.7/site-packages/setuptools/__init__.py", line 129, in setup return distutils.core.setup(**attrs) File "/usr/lib/python2.7/distutils/core.py", line 151, in setup dist.run_commands() File "/usr/lib/python2.7/distutils/dist.py", line 953, in run_commands self.run_command(cmd) File "/usr/lib/python2.7/distutils/dist.py", line 972, in run_command cmd_obj.run() File "setup.py", line 143, in run super(cmd, self).run() File "/usr/local/google/home/ajamato/beam_git/beam/venv/local/lib/python2.7/site-packages/setuptools/command/test.py", line 226, in run self.run_tests() File "/usr/local/google/home/ajamato/beam_git/beam/venv/local/lib/python2.7/site-packages/setuptools/command/test.py", line 248, in run_tests exit=False, File "/usr/lib/python2.7/unittest/main.py", line 94, in __init__ self.parseArgs(argv) File "/usr/lib/python2.7/unittest/main.py", line 149, in parseArgs self.createTests() File "/usr/lib/python2.7/unittest/main.py", line 158, in createTests self.module) File "/usr/lib/python2.7/unittest/loader.py", line 130, in loadTestsFromNames suites = [self.loadTestsFromName(name, module) for name in names] File "/usr/lib/python2.7/unittest/loader.py", line 91, in loadTestsFromName module = __import__('.'.join(parts_copy)) File "/usr/local/google/home/ajamato/beam_git/beam/sdks/python/apache_beam/__init__.py", line 86, in <module> from apache_beam import coders File "/usr/local/google/home/ajamato/beam_git/beam/sdks/python/apache_beam/coders/__init__.py", line 19, in <module> from apache_beam.coders.coders import * File "/usr/local/google/home/ajamato/beam_git/beam/sdks/python/apache_beam/coders/coders.py", line 25, in <module> from builtins import object ImportError: No module named builtins