output.py 文件源码

def setUp(self):
        super(CaptureOutput, self).setUp()
        if os.environ.get('OS_STDOUT_CAPTURE') in _TRUE_VALUES:
            self._stdout_fixture = fixtures.StringStream('stdout')
            self.stdout = self.useFixture(self._stdout_fixture).stream
            self.useFixture(fixtures.MonkeyPatch('sys.stdout', self.stdout))
        if os.environ.get('OS_STDERR_CAPTURE') in _TRUE_VALUES:
            self._stderr_fixture = fixtures.StringStream('stderr')
            self.stderr = self.useFixture(self._stderr_fixture).stream
            self.useFixture(fixtures.MonkeyPatch('sys.stderr', self.stderr))