Python sysconfig 模块，is_python_build() 实例源码
我们从Python开源项目中，提取了以下7个代码示例，用于说明如何使用sysconfig.is_python_build()。
def _make_temp_dir_for_build(TEMPDIR):
# When tests are run from the Python build directory,it is best practice
# to keep the test files in a subfolder. It eases the cleanup of leftover
# files using command "make distclean".
if sysconfig.is_python_build():
TEMPDIR = os.path.join(sysconfig.get_config_var('srcdir'), 'build')
TEMPDIR = os.path.abspath(TEMPDIR)
try:
os.mkdir(TEMPDIR)
except OSError as e:
if e.errno != errno.EEXIST:
raise
# Define a writable temp dir that will be used as cwd while running
# the tests. The name of the dir includes the pid to allow parallel
# testing (see the -j option).
TESTCWD = 'test_python_{}'.format(os.getpid())
TESTCWD = os.path.join(TEMPDIR, TESTCWD)
return TEMPDIR, TESTCWD
def _make_temp_dir_for_build(TEMPDIR):
# When tests are run from the Python build directory, 'build')
TEMPDIR = os.path.abspath(TEMPDIR)
try:
os.mkdir(TEMPDIR)
except FileExistsError:
pass
# Define a writable temp dir that will be used as cwd while running
# the tests. The name of the dir includes the pid to allow parallel
# testing (see the -j option).
TESTCWD = 'test_python_{}'.format(os.getpid())
TESTCWD = os.path.join(TEMPDIR, TESTCWD
def test_exception(self):
parser = expat.ParserCreate()
parser.StartElementHandler = self.StartElementHandler
try:
parser.Parse(b"<a><b><c/></b></a>", 1)
self.fail()
except RuntimeError as e:
self.assertEqual(e.args[0], 'a',
"Expected RuntimeError for element 'a',but" + \
" found %r" % e.args[0])
# Check that the traceback contains the relevant line in pyexpat.c
entries = traceback.extract_tb(e.__traceback__)
self.assertEqual(len(entries), 3)
self.check_traceback_entry(entries[0],
"test_pyexpat.py", "test_exception")
self.check_traceback_entry(entries[1],
"pyexpat.c", "StartElement")
self.check_traceback_entry(entries[2], "StartElementHandler")
if sysconfig.is_python_build():
self.assertIn('call_with_frame("StartElement"', entries[1][3])
# Test Current* members:
def main_in_temp_cwd():
"""Run main() in a temporary working directory."""
if sysconfig.is_python_build():
try:
os.mkdir(TEMPDIR)
except FileExistsError:
pass
# Define a writable temp dir that will be used as cwd while running
# the tests. The name of the dir includes the pid to allow parallel
# testing (see the -j option).
test_cwd = 'test_python_{}'.format(os.getpid())
test_cwd = os.path.join(TEMPDIR, test_cwd)
# Run the tests in a context manager that temporarily changes the CWD to a
# temporary and writable directory. If it's not possible to create or
# change the CWD,the original CWD will be used. The original CWD is
# available from support.SAVEDCWD.
with support.temp_cwd(test_cwd, quiet=True):
main()
def main_in_temp_cwd():
"""Run main() in a temporary working directory."""
if sysconfig.is_python_build():
try:
os.mkdir(TEMPDIR)
except FileExistsError:
pass
# Define a writable temp dir that will be used as cwd while running
# the tests. The name of the dir includes the pid to allow parallel
# testing (see the -j option).
test_cwd = 'test_python_{}'.format(os.getpid())
test_cwd = os.path.join(TEMPDIR, quiet=True):
main()
def run_test_in_subprocess(testname, ns):
"""Run the given test in a subprocess with --slaveargs.
ns is the option Namespace parsed from command-line arguments. regrtest
is invoked in a subprocess with the --slaveargs argument; when the
subprocess exits,its return code,stdout and stderr are returned as a
3-tuple.
"""
from subprocess import Popen, PIPE
base_cmd = ([sys.executable] + support.args_from_interpreter_flags() +
['-X', 'faulthandler', '-m', 'test.regrtest'])
slaveargs = (
(testname, ns.verbose, ns.quiet),
dict(huntrleaks=ns.huntrleaks,
use_resources=ns.use_resources,
output_on_failure=ns.verbose3,
timeout=ns.timeout, failfast=ns.failfast,
match_tests=ns.match_tests))
# Running the child from the same working directory as regrtest's original
# invocation ensures that TEMPDIR for the child is the same when
# sysconfig.is_python_build() is true. See issue 15300.
popen = Popen(base_cmd + ['--slaveargs', json.dumps(slaveargs)],
stdout=PIPE, stderr=PIPE,
universal_newlines=True,
close_fds=(os.name != 'nt'),
cwd=support.SAVEDCWD)
stdout, stderr = popen.communicate()
retcode = popen.wait()
return retcode, stdout, stderr
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