python之使用 python curses 逐页滚动或逐行滚动

我正在尝试使用 python curses 将一些文本写入窗口。 但是当我到达窗口的尽头时，我得到 addstr() returned ERR

如何逐页或逐行滚动输出。？如何绑定(bind)空格键或向下箭头？

这是我的代码:

try: 
    screen = curses.initscr() 
    screen.immedok(True) 
    curses.start_color() 
    curses.init_pair(1, curses.COLOR_GREEN, curses.COLOR_BLACK) 
    curses.init_pair(2, curses.COLOR_WHITE, curses.COLOR_BLACK) 
    screen.bkgd(curses.color_pair(2)) 
    screen.scrollok(1) 
    screen.border(0) 
 
    p = subprocess.Popen(command, stdout=subprocess.PIPE, stderr=subprocess.PIPE, shell=True) 
    (output, err) = p.communicate() 
    linenumber = 1 
    for line in getline(output): 
        if linenumber <= 2: 
            # First two lines are header, mark bold 
            screen.addstr(linenumber, 2, line, curses.color_pair(1)|curses.A_BOLD) 
        else: 
            screen.addstr(linenumber, 2, line) 
        linenumber += 1 
 
   screen.getch() 
   curses.endwin() 
 
except Exception, e: 
    print "\n\033[1;91m[FAILED]\033[0m  Interrupt  ", e 
    logging.error(e, exc_info=True) 
    curses.endwin() 

请您参考如下方法:

问题是您对 screen.addstr 的调用要求输入屏幕末尾的行号。考虑到您在屏幕上绘制的框，更好的方法是在框内创建一个新窗口(例如使用 curses.newwin)并在该窗口内编写 addstr 调用.

您的示例未按给定的方式编译。这是一个工作示例:

import curses 
import logging 
import subprocess 
import sys 
 
command = "ls -l /bin" 
try: 
    screen = curses.initscr() 
    screen.immedok(True) 
    curses.start_color() 
    curses.init_pair(1, curses.COLOR_GREEN, curses.COLOR_BLACK) 
    curses.init_pair(2, curses.COLOR_WHITE, curses.COLOR_BLACK) 
    screen.bkgd(curses.color_pair(2)) 
    screen.border(0) 
    boxed = curses.newwin(curses.LINES - 2, curses.COLS - 2, 1, 1) 
    boxed.scrollok(1) 
 
    p = subprocess.Popen(command, stdout=subprocess.PIPE, stderr=subprocess.PIPE, shell=True) 
    (output, err) = p.communicate() 
    linenumber = 1 
    for line in output.split("\n"): 
        if linenumber <= 2: 
            # First two lines are header, mark bold 
            boxed.addstr(line, curses.color_pair(1)|curses.A_BOLD) 
        else: 
            boxed.addstr(line) 
        boxed.addch("\n") 
        linenumber += 1 
        boxed.getch() 
 
    screen.getch() 
    curses.endwin() 
 
except Exception, e: 
    print "\n\033[1;91m[FAILED]\033[0m  Interrupt  ", e 
    logging.error(e, exc_info=True)