Single-liner to write to file in Python

Question

How do I perform the below write-to-file task in an easier or one-liner way?

>>> log="/tmp/test_write.log"
>>> file = open(log, "a")
>>> file.write("x" * 10)
>>> file.write("\n")
>>> file.close()

Is there some like this (bash/shell) in Python?

log="/tmp/test_write.log"
printf "`printf 'x%0.s' {1..10}`\n" >> $log

Answer 1

There is an easier (imo) way;

from the docs

>>> p = Path('my_text_file')
>>> p.write_text('Text file contents')
18
>>> p.read_text()
'Text file contents'

So, in a one-liner you can write;

Path("path/to/my-file.txt").write_text("My Text to write.")

Answer 2

Since you need call write and close, the only (not completely insane) way to write just a single line is to separate the two commands by a ;, which is horrible to read.

You can write a readable two-liner with the with statement:

with open("/tmp/test_write.log", "a") as log:
    log.write("x"*10 + '\n')

Files are context managers and using the with statement ensures that the file is closed once you exit the block.