linux文件锁flock

import fcntl

def acquire_lock(file_path):
    with open(file_path, 'r+') as file:
        fcntl.flock(file, fcntl.LOCK_EX)  # 获取独占锁
        try:
            # 在这里进行文件操作
            file.write("Some data")
        finally:
            fcntl.flock(file, fcntl.LOCK_UN)  # 释放锁

if __name__ == "__main__":
    acquire_lock('/path/to/your/file')

import fcntl
import time

def acquire_lock(file_path):
    with open(file_path, 'r+') as file:
        try:
            fcntl.flock(file, fcntl.LOCK_EX | fcntl.LOCK_NB)  # 获取独占锁，非阻塞模式
            print("Lock acquired")
            time.sleep(10)  # 模拟长时间操作
        except IOError:
            print("Could not acquire lock")
        finally:
            fcntl.flock(file, fcntl.LOCK_UN)  # 释放锁

if __name__ == "__main__":
    acquire_lock('/path/to/your/file')