duck.utils.filelock

File lock capabilities module.

Module Contents

Functions

lock_file	Lock file when modifying or accessing critical sections to avoid race conditions.
open_and_lock	Opens a file and acquires an exclusive lock.
unlock_file	Unlock a locked file.

API

duck.utils.filelock.lock_file(file_descriptor, retries=5, wait=1)

Lock file when modifying or accessing critical sections to avoid race conditions.

duck.utils.filelock.open_and_lock(filename, mode='r+', failsafe: bool = True)

Opens a file and acquires an exclusive lock.

Parameters:

• filename – The name of the file to open.

• mode – The file open mode (default is ‘r+’).

• failsafe – Whether to continue if file locking fails.

Returns:

The opened file object.

duck.utils.filelock.unlock_file(file_descriptor)

Unlock a locked file.