运作example脚本会报 loaded_suite = self.suiteClass(map(testCaseClass, testCaseNames)) TypeError: __init__() takes exactly 1 argument (2 given)

[BULESET]

Traceback (most recent call last):
File "/Applications/PyCharm.app/Contents/helpers/pycharm/_jb_unittest_runner.py", line 35, in
main(argv=args, module=None, testRunner=unittestpy.TeamcityTestRunner, buffer=not JB_DISABLE_BUFFERING)
File "/usr/local/Cellar/python@2/2.7.16/Frameworks/Python.framework/Versions/2.7/lib/python2.7/unittest/main.py", line 94, in init
self.parseArgs(argv)
File "/usr/local/Cellar/python@2/2.7.16/Frameworks/Python.framework/Versions/2.7/lib/python2.7/unittest/main.py", line 113, in parseArgs
self._do_discovery(argv[2:])
File "/usr/local/Cellar/python@2/2.7.16/Frameworks/Python.framework/Versions/2.7/lib/python2.7/unittest/main.py", line 214, in _do_discovery
self.test = loader.discover(start_dir, pattern, top_level_dir)
File "/usr/local/Cellar/python@2/2.7.16/Frameworks/Python.framework/Versions/2.7/lib/python2.7/unittest/loader.py", line 206, in discover
tests = list(self._find_tests(start_dir, pattern))
File "/usr/local/Cellar/python@2/2.7.16/Frameworks/Python.framework/Versions/2.7/lib/python2.7/unittest/loader.py", line 268, in _find_tests
yield self.loadTestsFromModule(module)
File "/usr/local/Cellar/python@2/2.7.16/Frameworks/Python.framework/Versions/2.7/lib/python2.7/unittest/loader.py", line 65, in loadTestsFromModule
tests.append(self.loadTestsFromTestCase(obj))
File "/usr/local/Cellar/python@2/2.7.16/Frameworks/Python.framework/Versions/2.7/lib/python2.7/unittest/loader.py", line 56, in loadTestsFromTestCase
loaded_suite = self.suiteClass(map(testCaseClass, testCaseNames))
TypeError: init() takes exactly 1 argument (2 given)

Process finished with exit code 1