test_loader.py 文件源码

def check_module_import_error(self, error, test, attr='sdasfasfasdf', regex='(unittest2)?sdasfasfasdf'):
        try:
            self._check_module_lookup_error(
                error, test, ImportError,
                "No module named ", attr, regex)
        except self.failureException:
            self._check_module_lookup_error(
                error, test, ImportError,
                "No module named ", attr, regex)

    # "The specifier name is a ``dotted name'' that may resolve either to
    # a module, a test case class, a TestSuite instance, a test method
    # within a test case class, or a callable object which returns a
    # TestCase or TestSuite instance."
    #
    # What happens when the module is found, but the attribute isn't?