Question

We are using GitLab and Python3 to recreate a Grocery List. Using only print statements, variables, and arithmetic operations how would I go about writing the code for such a project?

Grocery Items quantity price 1 $ total $ $ $ $ $ ՄԴ Item Apples Peanut Butter Cereal Campbells Soup Sweet Corn Barilla Pasta Laundry Detergent Pineapple chunks Canola Oil Coffee Prego Sauce Rigatoni Quaker Oats LED Light Bulbs Դ onwnowpA 0 G ono tttttttttttttttttttt 5.92 6.66 3.64 0.98 0.98 1.28 9.98 1.48 1.53 9.96 1.88 1.00 3.88 4.97 5.92 13.32 3.64 4.90 7.84 5.12 9.98 4.44 1.53 9.96 3.76 3.00 7.76 | $ $ $ Դ Դ $ $ 4.97 Sub Total Tax (7.35%) $ 86.14 6.33 Total $ 92.47

Answer 1

The codet to do so is as follows, it is well commented:

1 print('{0:22} {1:10} {2:10} {3:10}'.format("Item" ,"quantity", "price", "total")) 2 #Store all the three details in arrays so that #we can directly loop over and print the statements 4 items ['Apples', 'Peanut Butter', 'Cereal', 'Camplbells Soup', 'Sweet Corn', 'Barilla Pasta', 'Laundry Detergent', 'Pineapple Chunks', 'Canola Oil', 'Coffee', Prego Sauce', 'Rigatoni', 'Quaker Oats', 'LED light Bulbs'] 6 7 9 quantity [1,2,1,5,8,4,1,3,1,1,2,3,2,1] 10 price [5.92, 6.66,3.64,0.98,0.98,1.28,9.98,1.48, 1.53,9.96,1.88,1.00,3.88,4.97] 11 12 #variable to store the subtotal 13 14val 0 15 for i in range(len(items) ): 16 add to subtotal at each step val = val quantity[i]*price[i] print('{0:18} {1:10} ${2:10} ${3:10.2f}'.format(items [i],quantity[i],price[i],quantity[i]*price[i])) 17 18 19 20 21 print('\n{0:40} ${1:8.2f}'.format("Sub total" , val)) 22 print('{0:40 ${1:8.2f}'.format("Tax (7.35%)" , 0.0735*val)) # the fa:b.cf} format represents a as the parameter number #bas the size of the output field, c as the number of # digits after the decimal place 26 print('\n{0:40} ${1:8.2f}'.format("Total" , val + 0.0735*val)) 23 24 25 27

The output looks like:

quantity 1 $ 2 $ 1 $ 5 $ 8 $ 4 $ 1 $ 3 $ 1 $ 1 $ 2 $ price 5.92 $ 6.66 $ 3.64 $ 0.98 $ 0.98 $ 1.28 $ 9.98 $ 1.48 $ 1.53 $ 9.96 $ 1.88 $ 1.0 $ 3.88 $ 4.97 $ total Item Apples 5.92 Peanut Butter 13.32 Cereal 3.64 Camplbells Soup 4.90 Sweet Corn 7.84 Barilla Pasta 5.12 Laundry Detergent Pineapple Chunks 9.98 4.44 Canola Oil 1.53 Coffee 9.96 Prego Sauce Rigatoni Quaker Oats LED light Bulbs 3.76 3 3.00 2 $ 1 $ 7.76 4.97 Sub total 86.14 Тax(7.35%) 6.33 $ Total 92.47 tA

If you observe the code, i have to use the format() method to indent the blocks.

if the code helped you please upvote it, for any doubts post a comment, I will surely help.

Code:

print('{0:22} {1:10} {2:10} {3:10}'.format("Item" ,"quantity", "price", "total"))

# Store all the three details in arrays so that
# we can directly loop over and print the statements
items = ['Apples', 'Peanut Butter', 'Cereal', 'Camplbells Soup', 'Sweet Corn',
'Barilla Pasta', 'Laundry Detergent', 'Pineapple Chunks', 'Canola Oil',
'Coffee', 'Prego Sauce', 'Rigatoni', 'Quaker Oats', 'LED light Bulbs']

quantity = [1,2,1,5,8,4,1,3,1,1,2,3,2,1]

price = [5.92, 6.66,3.64,0.98,0.98,1.28,9.98,1.48,
1.53,9.96,1.88,1.00,3.88,4.97]
# variable to store the subtotal
val = 0

for i in range(len(items)):
# add to subtotal at each step
val = val + quantity[i]*price[i]
print('{0:18} {1:10} ${2:10} ${3:10.2f}'.format(items[i],quantity[i],price[i],quantity[i]*price[i]))

print('\n{0:40} ${1:8.2f}'.format("Sub total" , val))
print('{0:40} ${1:8.2f}'.format("Tax(7.35%)" , 0.0735*val))
# the {a:b.cf} format represents a as the parameter number
# b as the size of the output field, c as the number of
# digits after the decimal place
print('\n{0:40} ${1:8.2f}'.format("Total" , val + 0.0735*val))