python - creating an empty file and closing in one line

Question

I want to ensure that all resources are being cleaned correctly. Is this a safe thing to do:

try:
    closing(open(okFilePath, "w"))
except Exception, exception:
    logger.error(exception)
    raise

EDIT:

Infact, thinking about it, do I even need the try/catch as I am raising the exception anyways I can log at a higher level. If it errors on creating the file, one can assume there is nothing to close?

Answer 1

To be sure that the file is closed in any case, you can use the with statement. For example:

try:
    with open(path_to_file, "w+") as f:
        # Do whatever with f
except:
    # log exception

Answer 2

您可以使用它来创建一个文件并在一行中关闭它。

with open(file_path, 'w') as document: pass

Answer 3

If you want a real one liner:

os.remove("echo > YourFile")

It will work on Linux and Windows.

Answer 4

最简单的解决方案是：

open(fileName, 'w').close()

Answer 5

The mknod function creates a new file without opening it

import os
import stat
os.mknod('test', 0o600 | stat.S_IFREG)
# 0o600 -> owner can read+write file, group and other have no permissions
# stat.S_IFREG -> create regular file, instead of character/block device, pipe, or other special file

Caveat: only available on Unix