Generate output file Python

Question

As it can be seen in the code. I created two output files one for output after splitting and second output as actual out after removing duplicate lines How can i make only one output file. Sorry if i sound too stupid, I'm a beginner

import sys
txt = sys.argv[1] 

lines_seen = set() # holds lines already seen
outfile = open("out.txt", "w")
actualout = open("output.txt", "w")

for line in open(txt, "r"):
    line = line.split("?", 1)[0]
    outfile.write(line+"\n")
outfile.close()

for line in open("out.txt", "r"):
    if line not in lines_seen: # not a duplicate
        actualout.write(line)
        lines_seen.add(line)

actualout.close()

Erik McKelvey · Accepted Answer · 2021-12-13 07:05:43Z

1

You can add the lines from the input file directly into the set. Since sets cannot have duplicates, you don't even need to check for those. Try this:

import sys
txt = sys.argv[1] 

lines_seen = set() # holds lines already seen
actualout = open("output.txt", "w")

for line in open(txt, "r"):
    line = line.split("?", 1)[0]
    lines_seen.add(line + "\n")

for line in lines_seen:
    actualout.write(line)

actualout.close()

answered Dec 13, 2021 at 7:05

Erik McKelvey

1,6372 gold badges17 silver badges25 bronze badges

Sign up to request clarification or add additional context in comments.

Comments

Maik Hasler · Accepted Answer · 2021-12-13 07:08:09Z

1

In the first step you iterate through every line in the file, split the line on your decriminator and store it into a list. After that you iterate through the list and write it into your output file.

import sys
txt = sys.argv[1] 

lines_seen = set() # holds lines already seen
actualout = open("output.txt", "w")

data = [line.split("?", 1[0] for line in open("path/to/file/here", "r")]
for line in data:
    if line not in lines_seen: # not a duplicate
        actualout.write(line)
        lines_seen.add(line)  

actualout.close()

answered Dec 13, 2021 at 7:08

Maik Hasler

1,4101 gold badge17 silver badges53 bronze badges

1 Comment

Gaming World Over a year ago

Its showing error in data variable where you tried to close the list

Collectives™ on Stack Overflow

Generate output file Python

2 Answers 2

Comments

1 Comment

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

Comments

1 Comment

Your Answer

Sign up or log in

Post as a guest

Related