duplicate parameter name

"Duplicate parameter name" error occurs when you have defined a function or method with two or more parameters having the same name. Parameter names should be unique within the scope of a function or method. To fix this error, you need to rename one of the parameters to a different name. For example:

def add_numbers(num1, num2):
    return num1 + num2

# This will result in an error because the parameter names are the same
def multiply_numbers(num1, num1):
    return num1 * num2

# To fix the error, rename one of the parameters
def multiply_numbers(num1, num2):
    return num1 * num2