3.assertIn(self, member, container, msg=None) --判断是字符串是否包含:member in container 4.assertNotIn(self, member, container, msg=None) --判断是字符串是否不包含:member not in container 5.assertTrue(self, expr, msg=None) -
Python中的assertIn()是单元测试库函数,用于单元测试中以检查字符串是否包含在其他字符串中。此函数将使用三个字符串参数作为输入,并根据断言条件返回一个布尔值。如果 key 包含在容器字符串中,它将返回true,否则返回false。 用法:assertIn(key, container, message) 参数:assertIn()接受以下三个参数的说明: key:...
Theassertstatement exists in almost every programming language. It has two main uses: 大多数语言都有assert语句,它起到两个作用: It helps detect problems early in your program, where the cause is clear, rather than later when some other operation fails. A type error in Python, for example, c...
(Pdb) l 1 # err.py 2 -> s = '0' 3 n = int(s) 4 print(10 / n) 1. 输入命令n可以单步执行代码: (Pdb) n> /Users/kuaie/Github/learn-python3/samples/debug/err.py(3)<module>()-> n = int(s)(Pdb) n> /Users/kuaie/Github/learn-python3/samples/debug/err.py(4)<module>(...
Python 有两种错误很容易辨认:语法错误和异常。 Python assert(断言)用于判断一个表达式,在表达式条件为 false 的时候触发异常。 语法错误 Python 的语法错误或者称之为解析错,是初学者经常碰到的,如下实例 >>>whileTrueprint('Hello world') File"<stdin>", line 1,in?whileTrueprint('Hello world')^SyntaxError...
What is the use of “assert” in Python? In Python programming, precision and reliability are necessary. The “assert” statement makes sure safeguards the code against errors and anomalies. It is a sentinel of truth, a guardian of code correctness, and an invaluable ally in the pursuit of ...
The assert statement is a powerful tool in Python that helps you identify issues early in your code by enforcing conditions that must be true. While it is commonly used in testing and debugging, it should be applied carefully, as assertions can be disabled in optimized environments. ...
Python test_samples.py def test_sum(): assert sum([1, 2, 3]) == 6 def test_len(): assert len([1, 2, 3]) > 0 def test_reversed(): assert list(reversed([1, 2, 3])) == [3, 2, 1] def test_membership(): assert 3 in [1, 2, 3] def test_isinstance(): assert is...
for val in values: if val < _min: _min = val return _min We have two algorithms in a module. min_max_test.py #!/usr/bin/python import algo def test_min(): values = (2, 3, 1, 4, 6) val = algo.min(values) assert val == 1 ...
3.assertIn(self, member, container, msg=None) --判断是字符串是否包含:member in container 4.assertNotIn(self, member, container, msg=None) --判断是字符串是否不包含:member not in container 5.assertTrue(self, expr, msg=None) --判断是否为真:expr is True 6.assertFalse(self, expr, msg=...