custom_assert是自定义的 assert 函数的名称 condition是需要验证的条件 message是在断言失败时显示的错误信息 如果condition不满足,则会抛出AssertionError异常,并显示message 2. 调用自定义 assert 函数 接下来,我们可以调用这个自定义的 assert 函数,在需要进行断言的地方使用它。 # 引用形式
2.4 assert 语句 2.5 else 和 finally 分支 3 自定义异常对象 4 调试 4.1 使用 print() 函数 4.2 使用 pdb 模块 4.3 使用 IDE 的调试功能 参考资料:LQLab:Python 完全自学教程 — LQLab (lqpybook.readthedocs.io) 1 错误 在Python 语言中,导致程序不能运行的原因通常划分为两类:错误和异常。 错误可以分...
try:# 一些可能引发异常的操作except(TypeError,ValueError)ase:# 处理多个异常类型print(f"Caught an exception:{e}")exceptExceptionase:# 处理其他异常print(f"An unexpected error occurred:{e}") 3.assert语句 assert语句用于检查某个条件是否为真,如果为假,则引发AssertionError异常。它可用于调试和确保程序的...
>>> a = "python" >>> b = "javascript" >>> assert a == b Traceback (most recent call last): File "<stdin>", line 1, in <module> AssertionError >>> assert (a == b, "Values are not equal") <stdin>:1: SyntaxWarning: assertion is always true, perhaps remove parentheses? >...
>>>fromassertsimportassert_true,assert_equal,assert_raises>>>my_var=13>>>assert_equal(13,my_var)>>>assert_true(True,msg="custom failure message")>>>withassert_raises(KeyError): ...raiseKeyError() Failure messages can be customized: ...
__init__(message) self.code = code try: if some_condition_not_met(): raise CustomError("特定条件未满足!", 400) except CustomError as ce: print(f"错误代码:{ce.code},错误详情:{ce}") 4.2 单元测试与集成测试 4.2.1 使用unittest模块编写测试用例 Python标准库中的unittest模块提供了丰富的测试...
bookTestCase(unittest.TestCase):@mock.patch.object(facebook.GraphAPI,'put_object', autospec=True)deftest_post_message(self, mock_put_object): sf = simple_facebook.SimpleFacebook("fake oauth token") sf.post_message("Hello World!")# verifymock_put_object.assert_called_with(message="Hello ...
AstNode> -Module– APythonmodule > -Class– The body of a class definition > -Function– The body of a function definition > -Stmt– A statement >> -Assert– An assert statement >> -Assign– An assignment >>> -AssignStmt– An assignment statement, x = y >>> -ClassDef– A class ...
self.assertEqual( resp.get_body(), b'21 * 2 = 42', ) Inside your .venv Python virtual environment folder, install your favorite Python test framework, such as pip install pytest. Then run pytest tests to check the test result. Temporary files The tempfile.gettempdir() method returns a...
(self):# Construct a mock HTTP request.req = func.HttpRequest(method='GET', body=None, url='/api/my_second_function', params={'value':'21'})# Call the function.func_call = main.build().get_user_function() resp = func_call(req)# Check the output.self.assertEqual( resp.get_...