python_day17_多线程

threading模块

import time


def sing():
    while True:
        print("唱歌~~~~~~~~~~~~")
        time.sleep(1)


def dance():
    while True:
        print("跳舞############")
        time.sleep(1)
if __name__ == '__main__':
    sing()
    dance()

此时为单线程

import threading
import time


def sing():
    while True:
        print("唱歌~~~~~~~~~~~~")
        time.sleep(1)


def dance():
    while True:
        print("跳舞############")
        time.sleep(1)

if __name__ == '__main__':
    # sing()
    # dance()
    # 多线程
    sing_thread = threading.Thread(target=sing)
    dance_thread = threading.Thread(target=dance)
    sing_thread.start()
    dance_thread.start()

使用threading模块，实现多线程

import threading
import time


def sing_msg(msg):
    while True:
        print(msg)
        time.sleep(1)


def dance_msg(msg):
    while True:
        print(msg)
        time.sleep(1)

if __name__ == '__main__':
    # 注意此处元组
    sing_msg_thread = threading.Thread(target=sing_msg, args=("唱歌",))
    dance_msg_thread = threading.Thread(target=dance_msg, kwargs={"msg": "跳舞"})
    sing_msg_thread.start()
    dance_msg_thread.start()

元组中仅含一个元素时，需加逗号，多线程传参