lock
import threadingimport random
import time
lock = threading.Lock
list1 = *10
def task1():
lock.acquire()
for i in range(len(list1)):
list1 = 1
sleep(0.1)
lock.release()
def task2():
lock.acquire()
for i in range(len(list1)):
print('------',i)
sleep(0.1)
lock.release()
if __name__ == '__main__':
th1 = threading.Thread(target=task1)
th2 = threading.Thread(target=task2)
th1.start()
th2.start()
th1.join()
th2.join()
print(list1)
结果
File "D:\python3.7\Lib\threading.py", line 865, in run
self._target(*self._args, **self._kwargs)
File "E:/python_pycharm/进阶学习/threading03.py", line 16, in task2
lock.acquire()
AttributeError: 'builtin_function_or_method' object has no attribute 'acquire'
但我看是有这个方法的呀
class Lock:
def __init__(self) -> None: ...
def __enter__(self) -> bool: ...
def __exit__(self, exc_type: Optional],
exc_val: Optional,
exc_tb: Optional) -> Optional: ...
if sys.version_info >= (3,):
def acquire(self, blocking: bool = ..., timeout: float = ...) -> bool: ...
else:
def acquire(self, blocking: bool = ...) -> bool: ...
def release(self) -> None: ...
def locked(self) -> bool: ...
为什么不能用 两个错误，第一个：
lock = threading.Lock
改成：
lock = threading.Lock()
第二个 time模块：
import time
改成：
from time import sleep
完整代码：
import threading
import random
from time import sleep
lock = threading.Lock()
list1 = *10
def task1():
lock.acquire()
for i in range(len(list1)):
list1 = 1
sleep(0.1)
lock.release()
def task2():
lock.acquire()
for i in range(len(list1)):
print('------',i)
sleep(0.1)
lock.release()
if __name__ == '__main__':
th1 = threading.Thread(target=task1)
th2 = threading.Thread(target=task2)
th1.start()
th2.start()
th1.join()
th2.join()
print(list1)
页:
[1]