print list line by line in python

Question

I am new in python and I am trying to print a list line by line.

fp = open(filepath) # Open file on read mode
lines = fp.read().split("\n")   #Create a list with each line

print(lines) #Print the list

for line in lines:
    print(line) #Print each line

fp.close()

But it's printing in one line.

The contents of the text file are

peat1,1,11345674565,04-11-2018
peat2,0,11345674565,05-11-2018
peat3,1,11345674565,06-11-2018
peat4,0,11345674565,07-11-2018

And it is printing as

peat1,1,11345674565,04-11-2018 peat2,0,11345674565,05-11-2018 peat3,1,11345674565,06-11-2018 peat4,0,11345674565,07-11-2018

The environment is -- Python 3.4 and running under Apache through cgi-bin

Any help is highly appreciated.

It should work. Perhaps your file only has 1 line? How many elements does your `lines` list contain? Can you include a portion of the file as well? — slider, Nov 23 '18 at 18:09
Use `print(len(lines))` to check the how many lines file has. — Mauro Baraldi, Nov 23 '18 at 18:14
@RedCricket Before posting here I have explored 3-4 similar posts but not the one which you mentioned. The reason is my txt file has got only 4 lines so it's not a large file. — Prithviraj Mitra, Nov 23 '18 at 18:15
@PrithvirajMitra your approach **should work** so there is something you aren't showing us. You really need to provide a [mcve], and at the very least, the output you are seeing. — juanpa.arrivillaga, Nov 23 '18 at 18:16
@juanpa.arrivillaga Please see the updated post if it helps. Thanks. — Prithviraj Mitra, Nov 23 '18 at 18:23
@PrithvirajMitra It's working fine for me: https://trinket.io/python/23a9bb3d00 — slider, Nov 23 '18 at 18:33

Austin · Answer 1 · 2018-11-23T18:11:09.463

0

With large files, you are better off reading files line by line, like so:

with open('filename') as file: 
    for line in file:
        print(line)

I suggest this approach with with, which handles closing the file pointer itself.

edited Nov 23 '18 at 18:11

answered Nov 23 '18 at 18:09

Austin

24,608
4
20
43

There approach *should* work, though, even if it is less than ideal. And in any event, if this were the answer, then it would be a clear duplicate and should be closed – juanpa.arrivillaga Nov 23 '18 at 18:10
@juanpa.arrivillaga, I added a reason to use this approach than OPs. :) – Austin Nov 23 '18 at 18:11
But that doesn't answer the purported question, because the OP claims the approach *doesn't* work, and indeed if it doesn't, then this approach wouldn't work either. The OP needs to add more details and a MCVE – juanpa.arrivillaga Nov 23 '18 at 18:12
I would suggest to use another var name than file, because `file` is a language key name. What if fp for file pointer? – Mauro Baraldi Nov 23 '18 at 18:12
1

@MauroBaraldi not in Python 3. – juanpa.arrivillaga Nov 23 '18 at 18:14
2

@MauroBaraldi, https://stackoverflow.com/questions/24942358/is-file-a-keyword-in-python – Austin Nov 23 '18 at 18:15

print list line by line in python

1 Answers1