CODEWITHSUNDEEP
python
voxard
voxard

Reputation: 23

How to compute the value of specific numbers from a txt file in Python?

I am wondering how I can output the "total value" of my inventory, and have only been able to successfully extract the numbers I want from the txt file using this code:

            def value():
                stock_value = open("stock.txt")
                for line in stock_value.readlines():
                    N = re.compile(r'(\d+)|-Side')
                    n = N.findall(line)
                    print(n)

For the input file, the first number of each line is the "price", and the second number is "quantity". I wish to multiply the price by quantity of each line, and then sum the total up and output into a total value. How can I do this?

My input file is:

Lion, 10, 2, Cat
Persian, 19, 4, Cat

I am trying to get my output to look something like this:

Total value:

Upvotes: 1

Views: 70

Answers (1)

Saurav Pathak
Saurav Pathak

Reputation: 836

We just multiply and sum it and return the value.

def value():
    stock_value = open("stock.txt")
    result = 0    # init sum as 0
    for line in stock_value.readlines():
        N = re.compile(r'(\d+)|-Side')
        n = N.findall(line)
        result += float(n[0]) * float(n[1])  # multiply two values and add to result

    return result

Upvotes: 1

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