Whitespaces remove from a matrix in file in python

Question

def main():
    f=open("fileread.txt","r")
    for x in f:
        p=x.split(" ")
        print(p)
main()

I have written this code for reading a matrix from a file and write it into the console. But I got unexpected output. The output should be

    ['5', '6', '9', '7']
    ['1', '7', '9', '6']
    ['4', '5', '6', '3']
    ['14', '25', '9', '6']

but I got

    ['5', '6', '9', '7\n']
    ['1', '7', '9', '6', '\n']
    ['4', '5', '6', '3', '\n']
    ['14', '25', '9', '6']

My Text file is written just like that :

Does this answer your question? [How can I remove a trailing newline?](https://stackoverflow.com/questions/275018/how-can-i-remove-a-trailing-newline) — AMC, Apr 05 '20 at 18:25

Caspar Wylie · Accepted Answer · 2020-04-05T17:55:31.333

2

\n represents a new line.

You can strip them like this:

def main():
    f=open("fileread.txt","r")
    for x in f:
        p=x.rstrip("\n").split(" ")
        print(p)
main()

I'd suggest using a csv file and Python's csv module which will handle things like this for you.

@Muts actually made a better suggestion in comment !

edited Apr 05 '20 at 17:55

answered Apr 05 '20 at 17:44

Caspar Wylie

4

You could just use `x.split()` empty strings won't be returned when separator isn't defined – Muts Apr 05 '20 at 17:51

score 2 · Answer 2 · edited Apr 06 '20 at 03:15

2

Just use x.split() instead of x.split(" "). x.split() will remove multiple spaces, newlines, tabs and all other forms of whitespace.

def main():
    f=open("fileread.txt","r")
    for x in f:
        p=x.split()
        print(p)

main()

Input:

Output:

['5', '6', '9', '7']
['1', '7', '9', '6']
['4', '5', '6', '3']
['14', '25', '9', '6']

edited Apr 06 '20 at 03:15

Joey

answered Apr 05 '20 at 18:17

Moududur Shamim

2 Answers2