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Complete the text below.

When a request requires additional parameters in the URI (Uniform Resource Identifier), they are typically appended to the URI as key-value pairs. Multiple parameters are separated from each other using the _____ symbol.

The following very_important_fuction() function is given. Which attribute of this function stores docstring?

def very_important_fuction():

    """This is a very important function that always returns 1."""

    return 1

Consider the following Python function:

def process_data(*args, **kwargs):

    if "mode" in kwargs:

        mode = kwargs['mode']

        if mode == 'sum':

            result = sum(args)

        elif mode == 'product':

            result = 1

            for arg in args:

                result *= arg

        else:

            result = None

    else:

        result = None

 return result

Which of the following function calls will correctly compute the product of the given numbers?

Which combination of methods is used to create the main window, set its title, and start the event loop in a Tkinter application?

Which of the following class definitions are valid? (select 2)