def _get_process(self):
debug.dbg('Start environment subprocess %s', self._executable)
parso_path = sys.modules['parso'].__file__
args = (
self._executable,
_MAIN_PATH,
os.path.dirname(os.path.dirname(parso_path)),
'.'.join(str(x) for x in sys.version_info[:3]),
)
process = GeneralizedPopen(
args,
stdin=subprocess.PIPE,
stdout=subprocess.PIPE,
stderr=subprocess.PIPE,
# Use system default buffering on Python 2 to improve performance
# (this is already the case on Python 3).
bufsize=-1)
self._stderr_queue = Queue()
self._stderr_thread = t = Thread(target=_enqueue_output,
args=(process.stderr,
self._stderr_queue))
t.daemon = True
t.start()
# Ensure the subprocess is properly cleaned up when the object
# is garbage collected.
self._cleanup_callable = weakref.finalize(self, _cleanup_process,
process, t)
return process
def _get_version(self):
try:
process = GeneralizedPopen([self.executable, '--version'], stdout=PIPE, stderr=PIPE)
stdout, stderr = process.communicate()
retcode = process.poll()
if retcode:
raise InvalidPythonEnvironment()
except OSError:
raise InvalidPythonEnvironment()
# Until Python 3.4 wthe version string is part of stderr, after that
# stdout.
output = stdout + stderr
match = re.match(br'Python (\d+)\.(\d+)\.(\d+)', output)
if match is None:
raise InvalidPythonEnvironment("--version not working")
return _VersionInfo(*[int(m) for m in match.groups()])
def _process(self):
parso_path = sys.modules['parso'].__file__
args = (self._executable, _MAIN_PATH,
os.path.dirname(os.path.dirname(parso_path)))
return GeneralizedPopen(
args,
stdin=subprocess.PIPE,
stdout=subprocess.PIPE,
)
def _get_version(self):
try:
process = GeneralizedPopen([self.executable, '--version'], stdout=PIPE, stderr=PIPE)
stdout, stderr = process.communicate()
retcode = process.poll()
if retcode:
raise InvalidPythonEnvironment()
except OSError:
raise InvalidPythonEnvironment()
# Until Python 3.4 wthe version string is part of stderr, after that
# stdout.
output = stdout + stderr
match = re.match(br'Python (\d+)\.(\d+)\.(\d+)', output)
if match is None:
raise InvalidPythonEnvironment("--version not working")
return _VersionInfo(*[int(m) for m in match.groups()])
def _process(self):
parso_path = sys.modules['parso'].__file__
args = (self._executable, _MAIN_PATH,
os.path.dirname(os.path.dirname(parso_path)))
return GeneralizedPopen(
args,
stdin=subprocess.PIPE,
stdout=subprocess.PIPE,
# Use system default buffering on Python 2 to improve performance
# (this is already the case on Python 3).
bufsize=-1)
def _get_process(self):
debug.dbg('Start environment subprocess %s', self._executable)
parso_path = sys.modules['parso'].__file__
args = (
self._executable,
_MAIN_PATH,
os.path.dirname(os.path.dirname(parso_path)),
'.'.join(str(x) for x in sys.version_info[:3]),
)
# Use explicit envionment to ensure reliable results (#1540)
env = {}
if os.name == 'nt':
# if SYSTEMROOT (or case variant) exists in environment,
# ensure it goes to subprocess
for k, v in os.environ.items():
if 'SYSTEMROOT' == k.upper():
env.update({k: os.environ[k]})
break # don't risk multiple entries
process = GeneralizedPopen(
args,
stdin=subprocess.PIPE,
stdout=subprocess.PIPE,
stderr=subprocess.PIPE,
# Use system default buffering on Python 2 to improve performance
# (this is already the case on Python 3).
bufsize=-1,
env=env)
self._stderr_queue = Queue()
self._stderr_thread = t = Thread(target=_enqueue_output,
args=(process.stderr,
self._stderr_queue))
t.daemon = True
t.start()
# Ensure the subprocess is properly cleaned up when the object
# is garbage collected.
self._cleanup_callable = weakref.finalize(self, _cleanup_process,
process, t)
return process
