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def validquantity(num):
try:
num = int(num)
except Exception as e:
print("invalid input: NOT INT")
return False
if num < 0:
print("invalid input: NUMBER LESS THAN 0")
return False
return True
def validprice(num):
try:
num = float(num)
except Exception as e:
print("invalid input: NOT INT")
return False
if num < 0:
print("invalid input: NUMBER LESS THAN 0")
return False
if (str(num)[::-1].find('.') > 2):
print("invalid input: NUMBES HAS TO MANY DECIMAL PLACES")
return False
return True
f = open("price.txt", "r")
for i in f.readlines():
item = i.split(",")[0]
quantity = i.split(",")[1]
price = i.split(",")[2]
if (validquantity(quantity) == False):
exit(1)
elif (validprice(price) == False):
exit(1)
quantity = int(quantity)
price = float(price)
print(f"{item} will cost {price*quantity:.02f}")
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