test.py 文件源码

def run_tests(self):
        # Purge modules under test from sys.modules. The test loader will
        # re-import them from the build location. Required when 2to3 is used
        # with namespace packages.
        if PY3 and getattr(self.distribution, 'use_2to3', False):
            module = self.test_args[-1].split('.')[0]
            if module in _namespace_packages:
                del_modules = []
                if module in sys.modules:
                    del_modules.append(module)
                module += '.'
                for name in sys.modules:
                    if name.startswith(module):
                        del_modules.append(name)
                list(map(sys.modules.__delitem__, del_modules))

        unittest_main(
            None, None, [unittest.__file__] + self.test_args,
            testLoader=self._resolve_as_ep(self.test_loader),
            testRunner=self._resolve_as_ep(self.test_runner),
        )