How do I validate lists in Python safely and idiomatically?

Validating lists in Python can be done safely and idiomatically using various techniques. Here are a few methods you can use to ensure the integrity and correctness of your lists.

Examples of List Validation in Python

# Example of validating a list to ensure it contains only integers def validate_integer_list(input_list): if not isinstance(input_list, list): raise ValueError("Input must be a list") for item in input_list: if not isinstance(item, int): raise ValueError(f"Invalid item {item}: all items must be integers") return True # Example usage try: my_list = [1, 2, 3, 'a'] validate_integer_list(my_list) except ValueError as e: print(e)

Python List Validation Type Safety Error Handling

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