Split text file into lines, Python

Question

I want to split a text file in python, using the following peice of code:

inputfile = open(sys.argv[1]).read()   
for line in inputfile.strip().split("\n"):
    print line

the problem is, that it's read the first 12 lines only!! the file is large more than 10 thousand lines!

What is the possible reason!

Thanks,

You should uses `open(sys.argv[1]).readlines()` which returns list of lines. — Arount, Apr 12 '17 at 09:18
Possible duplicate of [Iterating on a file using Python](http://stackoverflow.com/questions/10255273/iterating-on-a-file-using-python) — juanpa.arrivillaga, Apr 12 '17 at 09:18
be *lazy* `with open(sys.argv[1]) as f: for line in f: print(line)` add indention of course — Chris_Rands, Apr 12 '17 at 09:19
@Arount even better, iterate over the file-handler directly, which iterates over lines lazily. — juanpa.arrivillaga, Apr 12 '17 at 09:19
@juanpa.arrivillaga you are right :) @OP: `for line in open(sys.argv[1]):` — Arount, Apr 12 '17 at 09:19

Raj Damani · Accepted Answer · 2017-04-12T09:57:37.963

3

with open(sys.argv[1]) as inputfile:
    for line in inputfile:
        print(line)

Use readlines() which will generate list automatically and no need to read by "\n".

edited Apr 12 '17 at 09:57

answered Apr 12 '17 at 09:21

Raj Damani

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@noor, are you getting any error ? Does prompt stuck up or end execution normally ? – Raj Damani Apr 12 '17 at 09:38
No I commented everything in the file until this part run correctly – userInThisWorld Apr 12 '17 at 09:40
@noor, I want to know the behavior of code after reading 15 lines ! – Raj Damani Apr 12 '17 at 09:42
Nothing else, I tried to put this code in a separated python file (i.e the only piece of code you wrote) – userInThisWorld Apr 12 '17 at 09:45
Let us [continue this discussion in chat](http://chat.stackoverflow.com/rooms/141527/discussion-between-raj-damani-and-noor). – Raj Damani Apr 12 '17 at 09:48

score 0 · Answer 2 · answered Apr 12 '17 at 13:48

Try this:

text = r"C:\Users\Desktop\Test\Text.txt"

oFile = open(text, 'r')
line = oFile.readline()[:-1]
while line:
    splitLine = line.split(' ')
    print splitLine
    line = oFile.readline()[:-1]
oFile.close()

I use this style to iterate through huge text files at work

Split text file into lines, Python

2 Answers2