How to get total value of everything in a list with "$" on the values?

Question

I have a list of data from a csv file consisting of [‘-$323’, ‘$8’, ‘-$4’, ‘$384’,………]. I would like to get the total value of everything in the list but as it is a str type and there is a $, i’m unable to convert it to a int or float.

I tried changing the type of the list but it resulted in an error. Is there any way to get the total value in the list?

for price, quantity in cluster1:
        price_c1.append(price.replace("$",""))

# price_c1.append(float(price.replace("$","")) results in a ValueError
ValueError: could not convert string to float: '1,996'

Asked By: marfcu

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Source

Answer 1

You can use [int(i.replace("$", "")) for i in l] to remove the $

Or you can change the numbers to int by using int(str[1:]) for str in list (This is not perfect, since if the 1st letter is - it can cut that off, but i think the 1st item of your list is a typo :))

The [1:] Means slice off the 1st letter from the string, so the $ will be gone and you can convert the str to a int by using int()

Answered By: Cyao

Answer 2

amounts = ['-$323', '$8', '$-4', '$384']
# A list to hold our dollar amounts as ints
dollars_as_int = []

for amount in amounts:
    # Check to make sure the $ is in the string so we don't
    # get a value error.
    if "$" in amount:
        # Get the index of the dollar sign.
        index_of_dollar = amount.index("$")
        # Slice it out and append it to another list.
        dollars_as_int.append(int(amount[index_of_dollar + 1:]))

# Or another approach:
for amount in amounts:
    dollars_as_ints.append(int(amount.replace("$", "")))

for amount in dollars_as_int:
    print(amount)

# Output:

323
8
-4
384

Answered By: Nicolette.Skvortsova

How to get total value of everything in a list with "$" on the values?

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