flufl_lock_context_manager_file_based_locking_quickstart.py

1from datetime import timedelta
2from flufl.lock import Lock
3
4# The lock file does not need to exist, but the directory it is in must.
5# Using a context manager is the recommended way to acquire and release the lock.
6lock = Lock('/tmp/my-lock-file', lifetime=timedelta(seconds=10))
7
8with lock:
9    # The lock is now held. If another process tries to acquire this
10    # lock, it will block until this context manager exits.
11    print('Lock acquired')
12    # Perform thread-safe or process-safe operations here.
13
14# The lock is automatically released when the block is exited.
15print('Lock released')