python threading模块的使用指南

import time
import threading
def work():
"""只有函数对象才能佈田名线积"""
print('5．洗茶杯: 1min ' )
time.sleep(1)
print('6．放茶叶: 1min ' )
time.sleep(1)
start_time = time .time()
print( '1．洗壶: 1min ' )
time.s1eep(1)
print( '2．灌凉水:1min ' )
time.sleep(1)
print( '3．烧水: 1min ' )
time.sleep(1)
print( '4．等水烧开:3min ' )
work_thread = threading.Thread(target=work)
# 启动线程对象
work_thread.start()
time.sleep(1) # 5．洗茶杯: 1min
time.sleep(1) # 6．放茶叶: 1min
time.sleep(1)
print( '7．泡茶:1min ' )
time.sleep(1)
print('总共花了: ',time.time() - start_time)

import time
import threading
def upload():
print("开始上传文件...")
time.sleep(2)
print("完成上传文件...")
def down1oad():
print("开始下载文件...")
time.s1eep(2)
print("完成下载文件...")
if __name__ == '__main__':
upload_thread = threading.Thread(target=up1oad)
up1oad_thread .start()
up1oad_thread.join()
down1oad_thread = threading.Thread(target=down1oad，daemon=True)
down1oad_thread.start()
print('主线程结束')

import threading
def get(ur1，header=None):
 print(ur1)
 print(header)
for url in [ 'https : / /www.baidu.com', 'https:/ /www. soso.com ' ,' https: / /www . 360. com']:
 # threading.Thread
get_thread = threading. Thread(target=get,args=(ur1, ), kwargs={ ' header ':{ 'user-agent ' : ' pythonrequests'}})
 get_thread.start

import threading
import time
import random
def add1(n):
 for i in range(100) :
  time.sleep(random.randint(1,3))
  with open( 'he7lo.txt', mode='a', encoding='utf-8 ' ) as f:
f.write(f'in} he1lo wor1d !'+ 'he7lo wor1d !'*1024)
f.write(' \n ')
if __name__ == '___main__' :
 for n in range(10) :
  t1 = threading. Thread(target=add1，args=(n，))
  t1.start()