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What is the use of the ""add" and "iadd" methods in Python?

The "add" method (also known as the "+" operator) and the "iadd" method (also known as the "+=" operator) are used to perform addition operations in Python. The "add" method returns a new object that is the sum of the two operands, while the "iadd" method updates the first operand in place and returns None. The "add" method is used for objects that are immutable (cannot be changed), while the "iadd" method is used for objects that are mutable (can be changed). Examples of objects that support the "add" method are numbers and strings, while examples of objects that support the "iadd" method are lists and dictionaries.

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