Python - 覆盖已在输出中打印的文本

Question

它仅在 PyCharm 中以视觉方式工作

我正在编写一个电梯程序，我尝试像真正的电梯一样制作等待灯动画。但我想在之后打印一些输出，以便您可以在灯光动画开始之前看到整个电梯。

from termcolor import cprint

import time

# this would be user's input

level = 10

# ABOVE PART ELEVATOR

cprint('         ▲  ▼        ', 'yellow')

cprint('    ┏' + ('━' * 13) + '┓')

# LIGHTS

print('    ┃', end='')

for lights in range(1, 11):

    cprint('⦿', 'yellow', end='', flush=True)

    time.sleep(0.5)

print('┃')

# LOWER PART ELEVATOR

print('    ┣━━━━━━╥━━━━━━┫')

print('    ┃      ║      ┃\n' * 5 + '    ┃      ║      ┃')

print('━━━━┗━━━━━━╨━━━━━━┛━━━━')

print(f'\nYou have arrived at floor ', end='')

cprint(level, 'yellow')

所以这是一个像普通程序一样从左到右、从上到下打印的程序。但我希望输出是：

         ▲  ▼        

    ┏━━━━━━━━━━━━━┓

    ┃   #lights   ┃ <- animation appears after the entire elevator

    ┣━━━━━━╥━━━━━━┫

    ┃      ║      ┃

    ┃      ║      ┃

    ┃      ║      ┃

    ┃      ║      ┃

    ┃      ║      ┃

    ┃      ║      ┃

━━━━┗━━━━━━╨━━━━━━┛━━━━

"You have arrived at floor 10" <- this after lights

Answer 1

您的代码的问题在于，电梯的下部仅在显示灯光的 for 循环结束后才绘制。您必须在 for 循环内绘制整个电梯，这样电梯就会在灯光更新时显示。注意：为了很好地做到这一点，您应该在 for 循环的每次迭代后始终清除控制台。要执行此操作，您必须先执行此操作from os import system，然后再清除屏幕，就像system("clear")在 Linux 或 Mac 和system("cls")Windows 上执行的操作一样。这是编辑后的代码：from termcolor import cprintimport timefrom os import systemlevel = int(input('Which floor would you like to visit?\n')) + 1light = '⦿'lights = lightfor currentlevel in range(1, level):&nbsp; &nbsp; system('clear')&nbsp;&nbsp; &nbsp; cprint('&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;▲&nbsp; ▼&nbsp; &nbsp; &nbsp; &nbsp; ', 'yellow')&nbsp; &nbsp; cprint('&nbsp; &nbsp; ┏' + ('━' * 13) + '┓')&nbsp; &nbsp; print('&nbsp; &nbsp; ┃', end='')&nbsp; &nbsp; cprint(lights, 'yellow', end='', flush=True)&nbsp; &nbsp; print('┃')&nbsp; &nbsp; print('&nbsp; &nbsp; ┣━━━━━━╥━━━━━━┫')&nbsp; &nbsp; print('&nbsp; &nbsp; ┃&nbsp; &nbsp; &nbsp; ║&nbsp; &nbsp; &nbsp; ┃\n' * 5 + '&nbsp; &nbsp; ┃&nbsp; &nbsp; &nbsp; ║&nbsp; &nbsp; &nbsp; ┃')&nbsp; &nbsp; print('━━━━┗━━━━━━╨━━━━━━┛━━━━')&nbsp; &nbsp; print(f'\nYou have arrived at floor ', end='')&nbsp; &nbsp; cprint(currentlevel, 'yellow')&nbsp; &nbsp; time.sleep(0.5)&nbsp; &nbsp; lights += light干杯!

Answer 2

请注意，它仅适用于本机 Windows 控制台，但不适用于 pycharm 控制台，该控制台打印错误为“不支持重定向”。