Lists in files into printing the cheapest price. Python -

i have -

showfile = open("products.txt", 'r')         lines = showfile.readline()         while lines:             print(lines)             lines = showfile.readline()         showfile.close()         showfile = open("products.txt", 'r')         numbers = []         line in showfile:             tokens = line.split(',')             numbers.append(min(t t in tokens[0]))         minvalue = min(numbers)         print(minvalue) 

products.txt -

'snicker's, 33, 84 'mars', 18.5, 72 'bounty', 22, 96 

so 33 price, , 84 quantity. , 18.5 price , 72 quantity , on.

im trying make prints like- snickers $0.39 per unit. mars $0.29 per unit. bounty $0.23 per unit. bounty cheapest

help appreciated :d

you can use print repr(tokens) show what's in tokens variable. suggest add , see says.

note python has different types of values. e.g. "18.5" or '18.5' strings - these appropriate things strings (e.g. 'bounty') they're not numbers because can't maths on them.

if have number, want convert float form (e.g. 18.5) or int form (e.g. 18). python has functions that, called float() , int(). can normal maths (+-*/) on floats , ints.

(in case above isn't clear: repr print strings quotes around them; won't print quotes around floats or ints. repr print decimal point floats, , never ints).

note float('18.5') work, float(' 18.5') won't, because of stray space. if have problem, strip() function removes leading , trailing spaces string.