Pynput Listener 与 TKinter 并比较 Listener Output

Question

我最近问了一个关于 TKinter 的 <KeyPress> 和 <KeyRelease> 函数的问题，最终被引导到使用 Pynput 的监听器。

我唯一的问题是侦听器似乎没有输出或 return 一个我可以与字符串进行比较的字符。在下面的代码中，第 34-64 行是我的问题 - 具体来说，第 35、42、49 和 56 行。这些 if 语句应该使用密钥 return 从 Listener 编辑，如果它们相同，则在 TKinter 中移动我的角色。但是，无论我如何格式化 if 语句，它似乎都无法正常工作。

我原本以为 Listener 只是 returning 字符，但是用 print 语句测试似乎表明它是 returning 两边带有单引号的字符。

关于如何将 Listener 中的项目与字符串进行比较的任何想法？非常感谢！

# Import Tkinter
from tkinter import *
from pynput import keyboard

# Create Window
root = Tk()
canvas = Canvas(root, width=1000, height=1000)
canvas.pack()

# Create Background and Walls
background = canvas.create_rectangle(0, 0, 1000, 1000, fill='gray')
ground = canvas.create_rectangle(0, 840, 1000, 1000, fill='black')
leftwall = canvas.create_rectangle(0, 0, 30, 1000, fill='black')
rightwall = canvas.create_rectangle(970, 0, 1000, 1000, fill='black')
skybox = canvas.create_rectangle(0, 0, 1000, 25, fill='black')

# Create Character Models
character = canvas.create_rectangle(0, 0, 50, 50, fill='lightblue')

# Set Character start position
canvas.move(character, 500, 500)

# Get Character Position
x0, y0, x1, y1 = canvas.coords(character)
xpos = ((x1 - x0) / 2) + x0
ypos = ((y1 - y0) / 2) + y0

# Global Variables
contact = False
throwvar = ""


# Define Movements
def move_character(whatkey):
    if whatkey == "'w'":
        canvas.move(character, 0, -10)
        print("Moved up")
        root.after(20, move_character, whatkey)
        xbounds()
        ybounds()

    elif whatkey == "'a'":
        canvas.move(character, -10, 0)
        print("Moved left")
        root.after(20, move_character, whatkey)
        xbounds()
        ybounds()

    elif whatkey == "'d'":
        canvas.move(character, 10, 0)
        print("Moved right")
        root.after(20, move_character, whatkey)
        xbounds()
        ybounds()

    elif whatkey == "'s'":
        canvas.move(character, 0, 10)
        print("Moved down")
        root.after(20, move_character, whatkey)
        xbounds()
        ybounds()

    else:
        print("Listener doesn't work :(")


# Run Detection for if a key is released after being held
def on_press(key):
    whatkey = key
    move_character(whatkey)
    print('Pressed Key %s' % key)


def on_release(key):
    print('Released Key %s' % key)


# Apply constant downwards force while above y co-ords of 'ground'
def gravity():
    x0, y0, x1, y1 = canvas.coords(character)
    ypos = ((y1 - y0) / 2) + y0
    canvas.move(character, 0, 10)
    if ypos >= 800:
        root.after(20, anti)
    elif ypos <= 800 and contact == False:
        root.after(20, gravity)
        xbounds()
        ybounds()
    else:
        print("Gravity Error")


# Stop gravity when hitting 'ground'
def anti():
    x0, y0, x1, y1 = canvas.coords(character)
    ypos = ((y1 - y0) / 2) + y0
    canvas.move(character, 0, 0)
    if ypos <= 800:
        root.after(20, gravity)
    else:
        root.after(20, anti)
    xbounds()
    ybounds()


# Set bounds of screen, left/right
def xbounds():
    x0, y0, x1, y1 = canvas.coords(character)
    if x0 <= 25:
        print("Horizontal Contact, Left!")
        canvas.coords(character, 25, y0, 75, y1)
    elif x1 >= 975:
        print("Horizontal Contact, Right!")
        canvas.coords(character, 900, y0, 950, y1)


def ybounds():
    x0, y0, x1, y1 = canvas.coords(character)
    if y0 <= 25:
        print("Vertical Contact, Upper!")
        canvas.coords(character, x0, 25, x1, 75)
    elif y1 >= 975:
        print("Vertical Contact, Lower!")
        canvas.coords(character, x0, 925, x1, 975)


# Implement Gravity
root.after(500, gravity)


# Bind keys
def listen_to_me():
    with keyboard.Listener(on_press=on_press, on_release=on_release, move_character=move_character) as listener:
        root.mainloop()
        listener.join()


# Focus
root.focus_set()

# Start input code
listen_to_me()

Answer 1

通过提取 what Listener return 的字符串，找到所述 return 的 index[1] 并使用它移动来找到我的答案。还删除了我的移动函数中的 root.after(20, move_character, whatkey)，因为它无限递归，这没有帮助。

Pynput Listener 与 TKinter 并比较 Listener Output

Pynput Listener with TKinter and comparing Listener Output

python

tkinter

pynput