very basic program for review averages

reviews.py

reviews = []
review = None
while review != "exit":
    while True:
	    review = input("What is the next review? (or exit to exit with list) ")
	    if review == "exit": break
	    try:
		    review = int(review)
		    if not 5 >= review >= 0: print("Please enter an integer between 0 and 5")
		    else: break
	    except: print("Please enter an integer between 0 and 5")
    if not review == "exit":
        reviews.append(review)
        print("The new review average is {:.2f}".format(sum(reviews)/len(reviews)))
print("All reviews: " + str(reviews))

what is this why did I put it in a gist ☹️