threading

多线程

Example 1

import threading
import time

def print_numbers(start, end):
    i = start
    while i < end:
        time.sleep(1)
        print(i)
        i = i + 1

thread = threading.Thread(target=print_numbers, args=(1, 6))
thread.start()
thread.join()

Example 2

import threading
import time

class UtilityClass:
    def incr(i):
        return i+1
        
def print_numbers(start, end, utilityClass):
    i = start
    while i < end:
        time.sleep(1)
        print(i)
        i = utilityClass.incr(i)

thread = threading.Thread(target=print_numbers, args=(1, 6, UtilityClass))
thread.start()
thread.join()

threading.Thread

init(self, group=None, target=None, name=None, args=(), kwargs={}, *, daemon=None)

1. self: Thread对象
2. group: 暂时未使用
3. target：线程将要执行的目标函数
4. name: 线程名称
5. args: 目标函数的参数，以元组形式传递
6. kwargs: 目标函数的关键字参数，以字典形式传递
7. daemon: 当Thread对象上设置参数daemon=True时，这个时候当主线程结束后，由它创建的子线程也已经自动结束了。