Python 实践：文件锁

import fcntl
class FileLock(object):
    def __init__(self, file_name):
        self.file_name = file_name
        self.handle = open(file_name, 'a+')

    def lock(self):
        try:
            fcntl.flock(self.handle, fcntl.LOCK_EX | fcntl.LOCK_NB)
            return True
        except Exception as e:
            print(e)
            return False

    def unlock(self):
        fcntl.flock(self.handle, fcntl.LOCK_UN)


    def __del__(self):
        try:
            self.handle.close()
        except Exception as e:
            print(e)
            pass