Error compiling Cython file:
------------------------------------------------------------
...

    For performance reasons, doesn't actually impose an ordering
    on unequal values (always returning 1).
    """
    if type(left) is not type(right):
      return cmp(type(left), type(right))
               ^
------------------------------------------------------------

apache_beam/utils/windowed_value.py:83:16: undeclared name not builtin: cmp
Traceback (most recent call last):
  File "<string>", line 1, in <module>
  File "/private/tmp/pip-build-dg6i9xjw/apache-beam/setup.py", line 172, in <module>
    'apache_beam/utils/windowed_value.py',
  File "/Users/hyuns003/anaconda/lib/python3.6/site-packages/Cython/Build/Dependencies.py", line 934, in cythonize
    cythonize_one(*args)
  File "/Users/hyuns003/anaconda/lib/python3.6/site-packages/Cython/Build/Dependencies.py", line 1056, in cythonize_one
    raise CompileError(None, pyx_file)
Cython.Compiler.Errors.CompileError: apache_beam/utils/windowed_value.py
Compiling apache_beam/coders/stream.pyx because it changed.
Compiling apache_beam/runners/worker/statesampler.pyx because it changed.
Compiling apache_beam/coders/coder_impl.py because it changed.
Compiling apache_beam/metrics/execution.py because it changed.
Compiling apache_beam/runners/common.py because it changed.
Compiling apache_beam/runners/worker/logger.py because it changed.
Compiling apache_beam/runners/worker/opcounters.py because it changed.
Compiling apache_beam/runners/worker/operations.py because it changed.
Compiling apache_beam/transforms/cy_combiners.py because it changed.
Compiling apache_beam/utils/counters.py because it changed.
Compiling apache_beam/utils/windowed_value.py because it changed.
[ 1/11] Cythonizing apache_beam/coders/coder_impl.py
[ 2/11] Cythonizing apache_beam/coders/stream.pyx
[ 3/11] Cythonizing apache_beam/metrics/execution.py
[ 4/11] Cythonizing apache_beam/runners/common.py
[ 5/11] Cythonizing apache_beam/runners/worker/logger.py
[ 6/11] Cythonizing apache_beam/runners/worker/opcounters.py
[ 7/11] Cythonizing apache_beam/runners/worker/operations.py
[ 8/11] Cythonizing apache_beam/runners/worker/statesampler.pyx
[ 9/11] Cythonizing apache_beam/transforms/cy_combiners.py
[10/11] Cythonizing apache_beam/utils/counters.py
[11/11] Cythonizing apache_beam/utils/windowed_value.py

----------------------------------------