Python $2$: Grade Analyzer Project

Create a Grade Analyzer program.

$-$ Ask the user how many grades there have been so far.

$-$ Input each of these grades from the user.

$-$ Output the current average and letter grade.

$-$ Input the number of remaining grades.

$-$ Input the final grade the user wants.

$-$ Output the average the user needs on the remaining grades to reach their goal.

$-$ At the end of the run, offer the user the option to play again.

Sample program run is:

How many grades so far? $3$

Grade $1?95$

Grade $2?85$

Grade $3?75$

Your current grade is $85,$ which is a B

How many more grades will you have? $1$

What grade do you want? $85$

You need at least a $85$ to get there!

Go again $($y$/$n$)?$ n

Later, dude.