Joining 2 lines in python out of .txt file (line 148 and line 149)

Question

started a few days ago with python coding, atm doing some work on my discord bot.

my problem atm is that i cannot join 2 lines out of a .txt file in my print output.

the code itself works exactly as it should.

my output atm:

Spieler Online:
864

expected output:

Spieler Online:864

the method i'm actually using is

with open('test.txt') as fp:
lines=fp.readlines()
print (lines[148] +lines[150])

tried so much things from google/stackoverflow but nothing gets me the expected output.

thanks a bunch for every idea.

You have `\n` on the end of every line since `.readlines()` does not strip that off. — dawg, Mar 27 '21 at 16:52

miquelvir · Answer 1 · 2021-03-27T17:11:43.753

1

The problem is the lines end with '\n' (newline character), so when printed you also print the '\n' which gets translated into printing two lines.

with open('test.txt') as fp:
    lines = fp.readlines()
print(lines[148].strip('\n') + lines[150].strip('\n'))

edited Mar 27 '21 at 17:11

answered Mar 27 '21 at 16:51

miquelvir

1,748
1
7
21

1

Are you sure ? I thought `.readlines` reads the file and splits the resulting string at `\n` – TheEagle Mar 27 '21 at 16:52
1

Your print statement should not be within the `with` statement – astrochun Mar 27 '21 at 16:53
thanks a bunch, the .strip('\n') just did that what i wanted – 0x9 Mar 27 '21 at 16:58
actually readlines returns the lines without stripping the '\n' https://stackoverflow.com/questions/15233340/getting-rid-of-n-when-using-readlines – miquelvir Mar 27 '21 at 17:11
@astrochun true, fixed – miquelvir Mar 27 '21 at 17:12
@0x9 perfect! now we fixed it witht he suggestion of the fellow user so that it is better! if the issue is solved, please consider marking it as such – miquelvir Mar 27 '21 at 17:13

score 0 · Answer 2 · answered Mar 27 '21 at 16:49

0

You can use Join() method to merge two lines.

answered Mar 27 '21 at 16:49

taha yab

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6

score 0 · Answer 3 · answered Mar 27 '21 at 16:53

0

Because you are trying to print 2 different lines, both of the lines have '\n' at the end. In your print statement you are essentially saying print("Spieler Online:\n864\n"). If you want to print both of them on the same line you will have to strip the '\n' from the first line. To do this you can for example use your_string.rstrip("\n")

answered Mar 27 '21 at 16:53

Seppeke

143
7

thanks for the xplanation, the .strip('\n') did exactly what i wanted. – 0x9 Mar 27 '21 at 16:59

score 0 · Answer 4 · edited Apr 07 '21 at 20:50

In the print statement, you can use the argument 'sep' to your advantage.

Just instead of:

with open('test.txt') as fp:
    lines=fp.readlines()
    print (lines[148] +lines[150])

Use:

with open('test.txt') as fp:
    lines=fp.readlines()
    print (lines[148],lines[150],sep=' ')

The sep argument helps to change the separation between the two strings from the default separation, i.e., \n to whitespace (' ').

score 0 · Answer 5 · answered Mar 27 '21 at 17:53

0

try

with open('test.txt') as fp:
    lines=fp.readlines()
    print (lines[148].split('\n')[1]+' '+lines[150].split('\n')[0])

answered Mar 27 '21 at 17:53

Harsh

151
1
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Joining 2 lines in python out of .txt file (line 148 and line 149)

5 Answers5