python如何解决指定代码段超时程序卡死

import eventlet
eventlet.monkey_patch()

flag_TimeOut = True
with eventlet.Timeout(40, False):  # 设置超时时间为20秒
    qualified = Qua.getQualifiedRate(all_url)
    isPass = qualified.getPassRate()
    flag_TimeOut = False

if flag_TimeOut:
    print("程序超时！")

import datetime
import time

import datetime
starttime = datetime.datetime.now()
#long running
endtime = datetime.datetime.now()
print (endtime – starttime).seconds

import datetime
import time


t1 = time.time()
t1 = time.localtime(t1).tm_hour
print(t1)
while 1:
    if time.localtime(time.time()).tm_hour - t1<3:
        print("@@@@",time.localtime(time.time()).tm_hour)
    else:
        print("break")
        break
print("finsh")

import time
import eventlet#导入eventlet这个模块
eventlet.monkey_patch()#必须加这条代码
with eventlet.Timeout(2,False):#设置超时时间为2秒
   time.sleep(4)
   print('没有跳过这条输出')
print('跳过了输出')

from func_timeout import func_set_timeout


@func_set_timeout(5) # 设定函数执行时间
def task():
    print('开始运行！')
    time.sleep(6)
    return '执行成功，未超时'


try:

	task()
excpet:
	print("---")