我如何使用诅咒来响应密钥按下，而无需暂停程序等待输入？

发布于 2025-01-30 06:26:24 字数 316 浏览 2 评论 0原文

我想做的一个示例是：

import curses

while True:
        key = stdscr.getch()

        if key == 119:
            print("key w pressed")
        else:
            print("w key not pressed")

不仅在输入钥匙并且Getch不返回119时，ELSE语句不断打印的位置。换句话说，我不希望Getch函数等待按键按下，我只希望它仅返回键如果正在按下键，否则请勿返回或类似的东西。

原文

An example of what I would like to do is the following:

import curses

while True:
        key = stdscr.getch()

        if key == 119:
            print("key w pressed")
        else:
            print("w key not pressed")

Where the else statement prints constantly, not only when a key is entered and getch does not return 119. In other words, I don't want the getch function to wait for a key press, I only want it to only return a key if a key is being pressed, otherwise return None or something like that.

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半仙 2025-02-06 06:26:24

在Curses中，窗口具有nodelay flag。如果将其设置为true，则GETCH函数将不会等待用户输入，但是如果不读取输入，将返回-1。

import curses

stdscr.nodelay(True)

while True:
        key = stdscr.getch()
        if key == -1:
            print("no key was pressed")
        elif key == 119:
            print("key w pressed")
        else:
            print("different key than w was pressed")

In curses the window has a nodelay flag. If it is set to true, the getch function won't wait for user input, but will return -1 if no input is to be read.

import curses

stdscr.nodelay(True)

while True:
        key = stdscr.getch()
        if key == -1:
            print("no key was pressed")
        elif key == 119:
            print("key w pressed")
        else:
            print("different key than w was pressed")

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