详解Python多线程下的list

import threading
import time

# 随意设置 count 的值，值越大错误抛出的越快
count = 1000
l = []

def add():
  for i in range(count):
    l.append(i)
    time.sleep(0.0001)

def remove():

  for i in range(count):
    l.remove(i)
    time.sleep(0.0001)


t1 = threading.Thread(target=add)
t2 = threading.Thread(target=remove)
t1.start()
t2.start()
t1.join()
t2.join()
print(l)

> import dis
> def test_remove():
...   a = [1]
...   a.remove(0)
... 
> dis.dis(test_remove)
 2      0 LOAD_CONST        1 (1)
       2 BUILD_LIST        1
       4 STORE_FAST        0 (a)

 3      6 LOAD_FAST        0 (a)
       8 LOAD_ATTR        0 (remove)
       10 LOAD_CONST        2 (0)
       12 CALL_FUNCTION      1
       14 POP_TOP
       16 LOAD_CONST        0 (None)
       18 RETURN_VALUE

8     19 LOAD_GLOBAL       0 (a)
      22 LOAD_ATTR        2 (append)
      25 LOAD_CONST        2 (1)
      28 CALL_FUNCTION      1
      31 POP_TOP