我给出了一个在 ipython/jupyter notebook 中抛出错误的示例，但作为单个脚本运行良好。
import unittest
class Samples(unittest.TestCase):
def testToPow(self):
pow3 = 3**3
assert pow3==27
if __name__ == '__main__':
unittest.main()
错误如下:
---------------------------------------------------------------------------
AttributeError Traceback (most recent call last)
<ipython-input-7-232db94ae8b2> in <module>()
8
9 if __name__ == '__main__':
---> 10 unittest.main()
/usr/local/Cellar/python/2.7.10_2/Frameworks/Python.framework/Versions/2.7/lib/python2.7/unittest/main.pyc in __init__(self, module, defaultTest, argv, testRunner, testLoader, exit, verbosity, failfast, catchbreak, buffer)
92 self.testLoader = testLoader
93 self.progName = os.path.basename(argv[0])
---> 94 self.parseArgs(argv)
95 self.runTests()
96
/usr/local/Cellar/python/2.7.10_2/Frameworks/Python.framework/Versions/2.7/lib/python2.7/unittest/main.pyc in parseArgs(self, argv)
147 else:
148 self.testNames = (self.defaultTest,)
--> 149 self.createTests()
150 except getopt.error, msg:
151 self.usageExit(msg)
/usr/local/Cellar/python/2.7.10_2/Frameworks/Python.framework/Versions/2.7/lib/python2.7/unittest/main.pyc in createTests(self)
156 else:
157 self.test = self.testLoader.loadTestsFromNames(self.testNames,
--> 158 self.module)
159
160 def _do_discovery(self, argv, Loader=None):
/usr/local/Cellar/python/2.7.10_2/Frameworks/Python.framework/Versions/2.7/lib/python2.7/unittest/loader.pyc in loadTestsFromNames(self, names, module)
128 of string specifiers. See 'loadTestsFromName()'.
129 """
--> 130 suites = [self.loadTestsFromName(name, module) for name in names]
131 return self.suiteClass(suites)
132
/usr/local/Cellar/python/2.7.10_2/Frameworks/Python.framework/Versions/2.7/lib/python2.7/unittest/loader.pyc in loadTestsFromName(self, name, module)
98 obj = module
99 for part in parts:
--> 100 parent, obj = obj, getattr(obj, part)
101
102 if isinstance(obj, types.ModuleType):
AttributeError: 'module' object has no attribute '/Users/root3d/Library/Jupyter/runtime/kernel-c5225ac4-4b0e-4473-ae0a-3e051a704561'
可能是什么问题？那我应该怎么在notebook上写测试呢？
最佳答案
unittest.main 默认查看 sys.argv，这是启动 IPython 的原因，因此出现有关内核连接文件不是有效属性的错误。您可以将显式列表传递给 main 以避免查找 sys.argv。
在笔记本中，您还需要包含 exit=False 以防止 unittest.main 尝试关闭内核进程:
unittest.main(argv=['first-arg-is-ignored'], exit=False)
您可以在 argv 列表中传递更多参数，例如
unittest.main(argv=['ignored', '-v'], exit=False)
关于python - 无法在 ipython/jupyter notebook 中运行 unittest 的主要功能，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/37895781/