use pyhton

. We will define a function that will return a string that has been repeated a specified number of times, with a given separator, We will also want to deal with the case where the input to this function may be None. Write a function called respond_echo This function should have the following inputs, outputs, and internal procedures: Input(s): input_string - string, or None number_of_echoes - integer spacer - string Outputs: echo_output - string, or None Proceduro(s): . if input string is not None . set a variable echo_output to be input_string, repeated the number of times specified by number_of_echoes, joined by the spacer Hint: to do so, recall what does to strings otherwise if input_string Is None): . set echo_output to None return echo_output Note that a simple version of this function will end up adding the spacer to the end of the string as well. For our purposes hore, Implement that simple version