Write a multi line string to a text file using Python

Question

I'm trying to write multiple lines of a string to a text file in Python3, but it only writes the single line.

e.g

Let's say printing my string returns this in the console;

>> print(mylongstring)
https://www.link1.com
https://www.link2.com
https://www.link3.com
https://www.link4.com
https://www.link5.com
https://www.link6.com

And i go to write that into a text file

f = open("temporary.txt","w+")
f.write(mylongstring)

All that reads in my text file is the first link (link1.com)

Any help? I can elaborate more if you want, it's my first post here after all.

Does this answer your question? [write multiple lines in a file in python](https://stackoverflow.com/questions/21019942/write-multiple-lines-in-a-file-in-python) — user8314628, Jan 22 '20 at 04:56
Try this mylongeststring= `list(map(lambda x:x+'\n', mylongeststring))`. Now `f.write(mylongeststring)`. — Ch3steR, Jan 22 '20 at 04:58
@Amadan It just returns the same strings but with '' around them, e.g 'https://www.link1.com' compared to https://www.link1.com' — pseudoepinephrine, Jan 22 '20 at 05:03
@A.L. That returns; write() argument must be str, not generator — pseudoepinephrine, Jan 22 '20 at 05:06
So it's a _list of strings_, not a "multiline string". Those two things are completely different. Please make sure your question is correct. — Amadan, Jan 22 '20 at 05:06

score 10 · Answer 1 · edited Jun 29 '23 at 23:11

10

never open a file without closing it again at the end. if you don't want that opening and closing hustle use context manager with this will handle the opening and closing of the file.

x = """https://www.link1.com
https://www.link2.com
https://www.link3.com
https://www.link4.com
https://www.link5.com
https://www.link6.com"""

with open("text.txt","w+") as f:
    f.writelines(x)

edited Jun 29 '23 at 23:11

wjandrea

28,235
9
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81

answered Jan 22 '20 at 05:08

i_am_deesh

448
3
12

U13-Forward · Accepted Answer · 2020-01-22T05:16:53.507

5

Try closing the file:

f = open("temporary.txt","w+")
f.write(mylongstring)
f.close()

If that doesn't work try using:

f = open("temporary.txt","w+")
f.writelines(mylongstring)
f.close()

If that still doesn't work use:

f = open("temporary.txt","w+")
f.writelines([i + '\n' for i in mylongstring])
f.close()

edited Jan 22 '20 at 05:16

answered Jan 22 '20 at 05:02

U13-Forward

69,221
14
89
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Prints out the first string letter by letter – pseudoepinephrine Jan 22 '20 at 05:07

Shubham Vashisht · Answer 3 · 2023-07-01T10:36:17.687

-1

Try this

import pandas as pd

data = []  # made empty list

data.append(mylongstring)  # added all the str values to empty list data using append

df = pd.DataFrame(data, columns=['Values']) # creating dataframe

df_string = df.to_string(header=False, Index= False)
with open('output.txt', 'w+') as f:
    f.write(df_string)  # Saving the data to txt file

edited Jul 01 '23 at 10:36

answered Jun 29 '23 at 22:34

Shubham Vashisht

3
3

Pandas is overkill for this. And why bother setting a column label if you're not going to use it? – wjandrea Jun 29 '23 at 23:13
`TypeError: to_string() got an unexpected keyword argument 'Index'` The problem is `Index='False'` should be `index=False`. – wjandrea Jun 29 '23 at 23:15
This doesn't even work properly. It writes the string with escaped newlines. Maybe you meant `pd.DataFrame(mylongstring.split('\n'))`. But still, Pandas is overkill for this. – wjandrea Jun 29 '23 at 23:19
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Write a multi line string to a text file using Python

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