Python assert keyword is defined as a debugging tool that tests a condition. The Assertions are mainly the assumption that asserts or state a fact confidently in the program. For example, while writing a division function, the divisor should not be zero, and you assert that the divisor is not equal to zero.
It is merely a Boolean expression that has a condition or expression checks if the condition returns true or false. If it is true, the program does not do anything, and it moves to the next line of code. But if it is false, it raises an AssertionError exception with an optional error message.
Why Assertion is used
It is a debugging tool, and its primary task is to check the condition. If it finds that the condition is true, it moves to the next line of code, and If not, then stops all its operations and throws an error. It points out the error in the code.
Where Assertion in Python used
- Checking the outputs of the functions.
- Used for testing the code.
- In checking the values of arguments.Checking the valid input.
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