Describe the purpose of the 'assert' keyword.
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The assert keyword is used in programming to perform assertions, which are checks that you expect to be true during the execution of a program. If an assertion evaluates to false, it indicates that there’s an error in the code. Here’s how it works in different programming languages:
In Java: The assert keyword is used to create an assertion to test for logical errors in the code. If the assertion is false, the program throws an AssertionError. It’s a way to catch unexpected conditions that could indicate bugs during development1.
In Python: The assert keyword tests if a condition is true. If it is, nothing happens and the program continues to execute. If the condition is false, the program stops and raises an AssertionError, optionally printing an error message. It’s mainly used as a debugging aid to catch errors early.