problem in extracting number trought a file

Question

I'm trying to extract the values inside a file so I can make an average.

fname = input("Enter file name: ")
fh = open("mbox-short.txt")
count = 0
total = 0
for line in fh:
    if not line.startswith("X-DSPAM-Confidence:"):
        continue
    a = line.find(":")
    line = line.strip()
    b = float((line.find[a + 1]))
    count = count + 1
    total = b + total
    print(total/count)

I can't use the function sum. I try to use slice after the : and the output is wrong.

What output do you get and what did you expect to get instead? If you show a small example file we can better help you. — mkrieger1, Oct 26 '20 at 15:49
please provide few lines of your input and the output/error the current code produces — AndreyF, Oct 26 '20 at 15:54
[Understanding slice notation](https://stackoverflow.com/questions/509211/understanding-slice-notation) — mkrieger1, Oct 26 '20 at 15:58
Did you mean `b = float(line[a+1:])`? You can also do `b = float(line.split(':')[1]` — Tomerikoo, Oct 26 '20 at 15:58

score 0 · Accepted Answer · answered Oct 26 '20 at 15:55

0

When you call line.find(':') you end up with an numeric value for where that character exists in the string. You don't want to call .find() again to get the content after that character, you want to slice the string. b = float(line[a+1:]).

answered Oct 26 '20 at 15:55

g.d.d.c

46,865
9
101
111

wow!! thank you so much really. im just starting to code and this code gave me a lot of headache. thank you so much! – Fabian Vagi Oct 26 '20 at 16:56

problem in extracting number trought a file

1 Answers1