使用 Python Curses 线程会给我带来奇怪的字符? [英] Threading with Python Curses giving me weird characters?

问题描述

嘿，堆栈溢出.我正在尝试构建一个测试脚本，该脚本应该在多行(随着时间的推移创建它们)上混合输出更改字符(使用curses)，根据线程号创建新行.我有以下代码:

Hey there Stack Overflow. I'm trying to build a testing script that should mix outputting changing characters (using curses) on multiple lines (creating them over time), creating new lines based on the thread number. I have the below code:

# -*- coding: utf-8 -*-
import curses, time, threading

def threadedFunction(linePos):
    stdscr = curses.initscr()
    curses.noecho()
    curses.cbreak()

    try:
        stdscr.clear()
        for i in range(50):
            stdscr.addstr(linePos, 0, "testing %s..." % i)
            stdscr.refresh()
            time.sleep(.1)
    finally:
        curses.echo()
        curses.nocbreak()
        curses.endwin()
        pass
    pass

if __name__ == "__main__":
    for x in xrange(0, 4): # should produce 5 lines maximum
        exec("process" + str(x) + " = threading.Thread(target = threadedFunction, args = (" + str(x) + ",))")
        exec("process" + str(x) + ".start()")

我之前尝试过使用 multithreading 库，但我对它没有希望.线程库至少会在它变得疯狂之前在几行上显示我想要的数字.下面是我运行它时执行的示例:

I tried using the multithreading library before, but I had no hope with it. The threading library at least will display the numbers I want on a few lines before it goes crazy. Here's an example of what it does when I run it:

我想要的只是让程序简单地启动一个新线程，并显示一个计数为 50 的行，同时添加新行做同样的事情.我该怎么做呢??提前致谢:)

All I want is for the program to just simply start a new thread, and display a line that counts to 50 while adding new lines doing the same thing. How would I go about doing this?? Thanks in advance :)

推荐答案

即使你只在一个线程中使用curses，其他处理繁重的线程也会破坏curses 线程中的转义序列.环境变量 $ESCDELAY 指示在发送转义码 (0x1B) 后等待多长时间(以毫秒为单位)；如果超过该时间，get_wch() 将返回 ^[ 击键 (ESC).

Even if you only use curses in one thread, other processing-heavy threads can disrupt the escape sequences in the curses thread. The environment variable $ESCDELAY indicates how long (in ms) to wait after an escape code (0x1B) is sent; and if more than that time elapsed, a ^[ keystroke (ESC) is returned by get_wch().

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