How Can I Redirect Python's Standard Output to a File to Prevent SSH Connection Issues?

Redirecting Standard Output (stdout) to a File in Python

When dealing with long-running Python scripts that may be backgrounded during SSH sessions, it's crucial to find ways to prevent output errors caused by closed SSH connections. One solution is to redirect stdout to a file, ensuring that the application and its modules continue writing output despite the session closure.

Method 1: Using sys.stdout

One method involves reassigning sys.stdout to a file object:

import sys
with open('somefile', 'w') as sys.stdout:
    print('test')

While this approach may seem straightforward, it may not prevent all external modules from outputting to the terminal.

Method 2: Using Shell Redirection

A more commonly used method is to utilize shell redirection when executing the Python script. This works for both Windows and Linux systems:

$ python3 foo.py > file

By employing the ">" operator, the script's stdout will be redirected to the specified file, ensuring that all output is captured there instead of on the terminal.

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