What is the meaning of the error message "UndefinedType object is not callable" in Python?

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This error message occurs when you try to call a function or method on an object that does not have that function or method defined. It could mean that you misspelled the method name or that the object is not the expected data type. In this case, "UndefinedType" refers to an object that is not recognized as a defined data type in Python.