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# auto-shebang
"""Provides an entry point for python scripts and python modules on the controller with the current python interpreter and optional code coverage collection."""
from __future__ import (absolute_import, division, print_function)
__metaclass__ = type
import os
import sys
def main():
"""Main entry point."""
name = os.path.basename(__file__)
args = [sys.executable]
coverage_config = os.environ.get('COVERAGE_CONF')
coverage_output = os.environ.get('COVERAGE_FILE')
if coverage_config:
if coverage_output:
args += ['-m', 'coverage.__main__', 'run', '--rcfile', coverage_config]
else:
if sys.version_info >= (3, 4):
# noinspection PyUnresolvedReferences
import importlib.util
# noinspection PyUnresolvedReferences
found = bool(importlib.util.find_spec('coverage'))
else:
# noinspection PyDeprecation
import imp
try:
# noinspection PyDeprecation
imp.find_module('coverage')
found = True
except ImportError:
found = False
if not found:
sys.exit('ERROR: Could not find `coverage` module. '
'Did you use a virtualenv created without --system-site-packages or with the wrong interpreter?')
if name == 'python.py':
if sys.argv[1] == '-c':
# prevent simple misuse of python.py with -c which does not work with coverage
sys.exit('ERROR: Use `python -c` instead of `python.py -c` to avoid errors when code coverage is collected.')
elif name == 'pytest':
args += ['-m', 'pytest']
elif name == 'importer.py':
args += [find_program(name, False)]
else:
args += [find_program(name, True)]
args += sys.argv[1:]
os.execv(args[0], args)
def find_program(name, executable): # type: (str, bool) -> str
"""
Find and return the full path to the named program, optionally requiring it to be executable.
Raises an exception if the program is not found.
"""
path = os.environ.get('PATH', os.path.defpath)
seen = set([os.path.abspath(__file__)])
mode = os.F_OK | os.X_OK if executable else os.F_OK
for base in path.split(os.path.pathsep):
candidate = os.path.abspath(os.path.join(base, name))
if candidate in seen:
continue
seen.add(candidate)
if os.path.exists(candidate) and os.access(candidate, mode):
return candidate
raise Exception('Executable "%s" not found in path: %s' % (name, path))
if __name__ == '__main__':
main()
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