Web Reference: 1 day ago · In Python, all exceptions must be instances of a class that derives from BaseException. In a try statement with an except clause that mentions a particular class, that clause also handles any exception classes derived from that class (but not exception classes from which it is derived). Aug 22, 2025 · In Python, a TypeError occurs when an operation or function is applied to an object of an inappropriate type, such as adding a string and an integer. Although Python is dynamically typed, it still expects compatible data types for operations like arithmetic, indexing, iteration and function calls. The TypeError: exceptions must derive from BaseException signals that you attempted to raise an object that is not part of Python's exception hierarchy (most often a plain string).
YouTube Excerpt: Traceback (most recent call last): File "./ExceptionHandling_7_raise.py", line 11, in module myfunc(int(my_input)) File ".
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