#In this exercise, you won't edit any of your code from the

#Burrito class. Instead, you're just going to write a

#function to use instances of the Burrito class. You don't

#actually have to copy$/$paste your previous code here if you

#don't want to$,$ although you'll need to if you want to write

#some test code at the bottom.

#

#Write a function called total$\_$cost$.$ total$\_$cost should take

#as input a list of instances of Burrito, and return the

#total cost of all those burritos together as a float.

#