How Does Python's `setattr()` Function Assign Attributes to Objects?

Attribute Assignment in Python: Exploring setattr()

Envision a scenario where you possess a Python object named x and a string called s. The objective is to programmatically assign the attribute s to the object x, enabling access to x.myAttr and retrieving its value, 'magic'.

The secret lies in the setattr() function:

setattr(x, attr, 'magic')

This function takes three arguments:

• object: The object to modify attributes of.
• name: The name of the attribute to be set.
• value: The value that will be assigned to the attribute.

By calling setattr(x, attr, 'magic'), you effectively set the attribute myAttr on the object x to the value 'magic'.

For further clarification, consult the help function:

>>> help(setattr)
Help on built-in function setattr in module __builtin__:

setattr(...)
    setattr(object, name, value)
    
    Set a named attribute on an object; setattr(x, 'y', v) is equivalent to
    ``x.y = v''.

It is worth noting that this technique may not be applicable to pure instances of the object class. However, it is often useful with subclasses of object. Nonetheless, creating pure instances of object is generally discouraged.

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