how to make a bill in python
tprice = 0
tup = [['apple', '100', '2'], ['blackberry', '100', '23']]
myformat = "{:<10}{:<25}{:<5}{}"
f = open(filename, 'w')
g = open('recpt.txt', 'r')
lines = g.readlines()
for line in lines:
base = line.split()
tup.append(base)
print(myformat.format('S.no', 'Product', 'Unit', 'Price'))
for i in range(len(tup)):
if len(tup[i][0]) <= 7:
print(myformat.format(str([i + 1]), tup[i][0], tup[i][2], tup[i][1]))
else:
print(myformat.format(str([i + 1]), tup[i][0], tup[i][2], tup[i][1]))
price = int(tup[i][1])
tprice += price
print(tprice)