使用Python将空格转换为文本文件中的换行符

Question

I have a text file which looks like this:

15.9 17.2 18.6 10.5

I want to edit this file in Python so that it looks like this:

15.9
17.2
18.6 
10.5

This means that I need to replace the space strings by newline strings and save the text.

I tried this but it doesn't work:

f = open("testfile.txt", "w")

for line in f:
    if ' ' in line:
        line2 = line.replace(' ' , '\n')
    print(line2)
for i in line2:
    f.write(line2(i))
f.close

The print for line2 is already working, but I don't get a new text file with spaces replaced by newlines.

How can I fix the problem and produce the desired output?

Answer 1

with open("testfile.txt", "r") as r:
    with open("testfile_new.txt", "w") as w:
        w.write(r.read(.replace(' ' , '\n'))

Answer 2

try like this instead

f = open("testfile.txt", "r")
text=f.read()
f.close()
f=open("testfile.txt", "w+")
text2=''
if ' ' in text:
    text2 = text.replace(' ' , '\n')
    print(text2)
    f.write(text2)
f.close()

Answer 3

You can try using string replace:

string = string.replace('\n', '').replace('\r', '')

Firstly: f.close() is not there.

Secondly: try above code. It will replace spaces to new lines.

Answer 4

Example:

with open("file1.txt", "r") as read_file:
    with open("file2.txt", "w") as write_file:
        write_file.write(read_file.read().replace(" ", '\n'))

Content of file1.txt:

15.9 17.2 18.6 10.5

Content of file2.txt:

15.9
17.2
18.6
10.5

NOTE:

Or you can use the split and join method instead of replace.

write_file.write("\n".join(read_file.read().split()))

Answer 5

Use str.split with str.join

Ex:

with open("testfile.txt", "r") as infile:
    data = infile.read()

with open("testfile.txt", "w") as outfile:
    outfile.write("\n".join(data.split()))