Python calls the __getattr__ method whenever the requested attribute hasn’t already been defined. It means that. When an attribute lookup does not find the attribute in the typical places, this method is called. This function should either return the (computed) attribute value or throw an AttributeError exception if it fails.
It should be noted that if the attribute is discovered using the standard approach, __getattr__() is not invoked.
We use the Python setattr() function to assign a value to an object’s attribute. There might arise a situation where we might want to fetch the values assigned to the attributes. To provide this functionality, Python getattr() built-in function is used. Basically, Python’s getattr() built-in function is used to retrieve the value of the object’s attribute with the name string.
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