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ARROW-2131: [Python] Prepend module path to PYTHONPATH when spawning subprocess #1640

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wesm wants to merge 2 commits into from
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ARROW-2131: [Python] Prepend module path to PYTHONPATH when spawning subprocess #1640

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faa247a
Prepend development module path when spawning subprocess in test_seri…
wesm Feb 21, 2018
460ded1
Use more idiomatic option for getting module parent directory
wesm Feb 21, 2018
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21 changes: 20 additions & 1 deletion python/pyarrow/tests/test_serialization.py
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Original file line number Diff line number Diff line change
Expand Up @@ -580,6 +580,22 @@ def deserialize_regex(serialized, q):
p.join()


def _get_modified_env_with_pythonpath():
# Prepend pyarrow root directory to PYTHONPATH
env = os.environ.copy()
existing_pythonpath = env.get('PYTHONPATH', '')
if sys.platform == 'win32':
sep = ';'
else:
sep = ':'

module_path = os.path.abspath(
os.path.dirname(os.path.dirname(pa.__file__)))

env['PYTHONPATH'] = sep.join((module_path, existing_pythonpath))
return env


def test_deserialize_buffer_in_different_process():
import tempfile
import subprocess
Expand All @@ -589,9 +605,12 @@ def test_deserialize_buffer_in_different_process():
f.write(b.to_pybytes())
f.close()

subprocess_env = _get_modified_env_with_pythonpath()

dir_path = os.path.dirname(os.path.realpath(__file__))
python_file = os.path.join(dir_path, 'deserialize_buffer.py')
subprocess.check_call([sys.executable, python_file, f.name])
subprocess.check_call([sys.executable, python_file, f.name],
env=subprocess_env)


def test_set_pickle():
Expand Down