The German mathematician Gottfried Leibniz developed the following method to approximate the value of $\backslash$pi : $\backslash$pi $/4=11/3+1/51/7+...$

Write a program in the file leibniz.py that allows the user to specify the number of iterations used in this approximation and that displays the resulting value. $($LO: $3\mathrm{.}1)$