POSIX file system locking using flock
POSIX file system locking using flock.
Install this package with
pip install locks
The simplest usage is to block indefinitely until the lock is acquired
from locks import Mutex with Mutex('/tmp/file.lock'): # do exclusive stuff here
Alternatively, block until a timeout is reached
from locks import Mutex try: with Mutex('/tmp/file.lock', timeout=0.5): # do exclusive stuff here except BlockingIOError: # handle the failure to acquire the lock
Finally, a common paradigm is to attempt to acquire the lock without blocking,
do something, and then block indefinitely. Here
callback will be called once
if we cannot immediately acquire the lock, and then we will block indefinitely.
def callback(): print("Blocking: waiting for file lock on '/tmp/file.lock'") with Mutex('/tmp/file.lock', callback=callback): # do exclusive stuff here
timeout are used then we will attempt to
acquire the lock until the
timeout is reached, and then we will block
This project is licensed under the MIT License. See the LICENSE file.
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