item1='phone'
item1_price = 100
item1_quantity = 5
item1_price_total = item1_price * item1_quantity

print(type(item1))                 # str
print(type(item1_price))           # int
print(type(item1_quantity))        # int
print(type(item1_price_total))     # int



# output:
#     <class 'str'>
#     <class 'int'>
#     <class 'int'>
#     <class 'int'>
[]