My code runs until the last line, input is needed - python-3.x

Question

print("Welcome to my calorie counter program")def disp_menu():choice_list = ["a", "d", "m", "q"]
initial loop
while True:
print("What do you want to do?")
print("a = add an item")
print("d = delete an item")
print("q = quit")
choice = input("make a selection>")
if choice in choice_list:
return choice
else:
print("not a valid selection, try again")
while True:
choice = disp_menu()
if choice == "a":
tot_cals, item_cnt = add_process(tot_cals, item_cnt)
elif choice == "d":
del_item()
elif choice == "q":
break
disp_meal()
#create lists
item_list = [] #list of items ordered
cals_list = [] #
#create variables
cont = str("y")
item_cnt = int(0)
tot_cals = int(0)
#define functions here
#calculates calories per grams
def calc_cals(g_type, grams):
if g_type =="f":
return grams * 9
else:
return grams * 4
#first loop
while cont.lower() =="y":
valid_data = False #this is the boolean flag for data validation
#Capture input
while not valid_data:
item_name = input("please enter the item> ")
if len(item_name) > 20:
print("not a valid food name")
elif len(item_name) == 0:
print("you need to enter a name")
else:
valid_data = True
#reset the flag for the next data item
valid_data = False
while not valid_data:
try:g_carbs = int(input("enter grams of carbs> "))
except Exception is detail:
print("carbs error: ", detail)
else:
valid_data = True
#reset the flag for the next data item
valid_data = False
while not valid_data:
try:g_fats = int(input("enter grams of fats> "))
except Exception is detail:
print("fats error: ", detail)
else:
valid_data = True
valid_data = False
while not valid_data:
try:g_protein = int(input("enter grams of protein> "))
except Exception is detail:
print("protein error: ", detail)
else:
valid_data = True
new function
def add_process(tot_cals, item_cnt):
item_name = input_name()
g_carbs = input_grams("carbs")
g_fats = input_grams("fats")`
g_prot = input_grams("protein")
#Do the math
cals = calc_cals("c", g_carbs) + calc_cals("f", g_fats) + calc_cals("p", g_prot)
#output
print("total calories for {} are {}".format(item_name, cals))
incl = input("do you want to include {}? (y/n)>".format(item_name))
if incl.lower() == "y":
add_item(item_name, cals)
#accumulate totals
tot_cals = tot_cals + cals
item_cnt += 1 #shortcut method
print("item {} entered.".format(item_name))
else:
print("Item {} not entered.".format(item_name))
return tot_cals, item_cnt
#new function
def del_item():
if len(item_list == 0):
print("you have no items to delete")
else:
print("\nDelete an item")
disp_meal()
valid_data = False
while not valid_data:
try:
choice = int(input("Enter the item number you want to delete>"))
if 1<= choice <= len(item_list):
choice = choice - 1
print("Item {}. {} with {} calories will be deleted".format(choice + 1,
item_list[choice],
cals_list[choice]))
del item_list[choice]
del cals_list[choice]
valid_data = True
except Exception as detail:
print("error: ",detail)
print("try again")
#new function
def disp_meal():
print("\nMeal Calorie Counter")
print("Num\tItem\t\tcals")
print("---\t----\t\----")
meal_cals = 0
for c in range(len(item_list)):
meal_cals += cals_list[c]
print("{}.\t{}\t\t{}".format(c+1,item_list[c],
print("\nYour meal has {} items for a total of {} calories\n".format(len(item_list), meal_cals)
print("-" * 20)
#this last line gives me an eof error