python中的异步等待/非阻塞等待 [英] async wait / non blocking wait in python

问题描述

我喜欢等待一段时间后输出字符串的每个字母，以获得打字机效果.

i like to output each letter of a string after waiting some time, to get a typewriter effect.

for char in string:
     libtcod.console_print(0,3,3,char)
     time.sleep(50)

但这会阻塞主线程，程序变得不活跃.
在它完成之前你不能再访问它
注意:libtcod 使用

But this blocks the main thread, and the program turns inactive.
You cant access it anymore until it finishes
Note: libtcod is used

推荐答案

除非有什么阻止你这样做，把它放到一个线程中.

Unless there is something preventing you from doing so, just put it into a thread.

import threading
import time

class Typewriter(threading.Thread):
    def __init__(self, your_string):
        threading.Thread.__init__(self)
        self.my_string = your_string

    def run(self):
        for char in self.my_string:
            libtcod.console_print(0,3,3,char)
            time.sleep(50)

# make it type!
typer = Typewriter(your_string)
typer.start()
# wait for it to finish
typer.join()

这将防止睡眠阻塞您的主要功能.

This will prevent the sleep blocking your main function.

线程文档可以在这里找到
一个不错的例子可以是在这里找到

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