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我收到以下錯誤:_tkinter.TclError:無效的命令名稱」 0.14574424"
_tkinter.TclError: invalid command name 「.14574424」
我無法理解的錯誤。我究竟做錯了什麼?
# Import tkinter
from tkinter import *
class AnimationDemo:
def __init__(self):
window = Tk() # Create a window
window.title("Animation Demo") # Set a title
width = 250 # Width of the canvas
canvas = Canvas(window, bg = "white", width = 250, height = 50)
canvas.pack()
x = 0 # Starting x position
canvas.create_text(x, 30, text = "Message moving?", tags = "text")
dx = 3
while True:
canvas.move("text", dx, 0) # Move text dx unit
canvas.after(100) # Sleep for 100 milliseconds
canvas.update() # Update canvas
if x < width:
x += dx # Get the current position for string
else:
x = 0 # Reset string position to the beginning
canvas.delete("text")
# Redraw text at the beginning
canvas.create_text(x, 30, text = "Message moving?", tags = "text")
window.mainloop() # Create an event loop
AnimationDemo() # Create GUI
錯誤:回溯(最近通話最後一個): 文件「d :/sem4/t/lesson4/task1/task.py「,第29行,在 AnimationDemo()#創建GUI 文件」D:/sem4/t/lesson4/task1/task.py「,第17行,in __init__ canvas.move(「text」,dx,0)#移動文本dx單位 F (self._w,'move')+移動到第一行,然後移動到第一行, args) _tkinter.TclError:無效的命令名稱「.14440096」 –
hss
你在做什麼導致錯誤?順便說一句,這是用Tkinter做動畫的錯誤方法。見http://stackoverflow.com/a/11505034/7432 –
謝謝@BryanOakley,但我可以知道爲什麼它顯示錯誤,如果我們使用while循環 – hss