Python 2.7 诅咒键盘(True)没有特殊的键
我正在尝试为Python2和Python3编写代码。以下是我用来学习诅咒的完整代码:Python 2.7 诅咒键盘(True)没有特殊的键,python-2.7,python-3.x,linux-mint,python-curses,Python 2.7,Python 3.x,Linux Mint,Python Curses,我正在尝试为Python2和Python3编写代码。以下是我用来学习诅咒的完整代码: # -*- coding: utf-8 -*- from __future__ import print_function import curses import sys import traceback class Cursor(object): def __init__(self): self.stdscr = curses.initscr() curses.
# -*- coding: utf-8 -*-
from __future__ import print_function
import curses
import sys
import traceback
class Cursor(object):
def __init__(self):
self.stdscr = curses.initscr()
curses.noecho()
curses.cbreak()
self.stdscr.keypad(True)
def end_window(self):
curses.nocbreak()
self.stdscr.keypad(False)
curses.echo()
curses.endwin()
def start_win(self, begin_x=0, begin_y=1, height=24, width=71):
return curses.newwin(height, width, begin_y, begin_x)
def applic():
print("yo man")
x = Cursor()
window = x.start_win()
try:
# This raises ZeroDivisionError when i == 10.
for i in range(0, 11):
v = i - 10
key = window.getch()
# EDIT - Added this debug line to verify what key gets
window.addstr('type of {} is {}\n'.format(key, type(key)))
if key == curses.KEY_UP:
return
window.addstr('10 divided by {} is {}\n'.format(v, 10 // v))
window.refresh()
except Exception:
x.end_window()
errorstring = sys.exc_info()[2]
traceback.print_tb(errorstring)
applic()
我的问题是key
永远不会等于curses.key\u UP
,因为getch()(或getkey())返回的是单个字符串,而不是等于key\u UP(\x1b]A
)的整个转义键代码。因此,每次我按下例程中的向上箭头,程序都会循环执行键代码\x1b
,[
,A
,并生成三行输出:
10 divided by -10 is -1
10 divided by -9 is -2
10 divided by -8 is -2
对于这个测试,我希望向上箭头键允许我在我等于10时发生的预期异常之前爆发
根据针对Curses的python文档,stdscr.keypad(True)
应该允许返回整个键代码,但似乎没有这样做
添加了一些调试打印输出信息以显示返回的内容。无论我使用getch()还是getkey(),结果都是一样的;它返回一个字符串(文档表明getch将返回一个整数):
<代码>类型为
10除以-9等于-2
[is]的类型
10除以-8等于-2
A型是
10除以-7等于-2
问题在于,您在主窗口上设置了
键盘
属性,但正在使用getch
从其他窗口读取。此更改将使您的程序接受键
:
--- curses-vs-keypad.py 2017/04/02 11:07:41 1.1
+++ curses-vs-keypad.py 2017/04/03 00:57:16
@@ -28,6 +28,7 @@
print("yo man")
x = Cursor()
window = x.start_win()
+ window.keypad(True)
try:
# This raises ZeroDivisionError when i == 10.
for i in range(0, 11):
问题是您在主窗口上设置了
键盘
属性,但正在使用getch
从其他窗口读取。此更改将使您的程序接受一个键
:
--- curses-vs-keypad.py 2017/04/02 11:07:41 1.1
+++ curses-vs-keypad.py 2017/04/03 00:57:16
@@ -28,6 +28,7 @@
print("yo man")
x = Cursor()
window = x.start_win()
+ window.keypad(True)
try:
# This raises ZeroDivisionError when i == 10.
for i in range(0, 11):