Tkinter錯誤＃座標：預計0或4，得到5

Question

我試圖找到mycar（x1）的座標，但它是錯誤，我試圖找到解決方案，但我無法理解它。有人可以向我解釋嗎？謝謝

from tkinter import * 
import tkinter as tk 

class Example(tk.Frame): 
    def __init__(self,parent): 
     tk.Frame.__init__(self) 

     #create a canvas 
     self.canvas = tk.Canvas(width=600, height=250) 
     self.canvas.pack() 
     self.road() 
     self.crossing() 

    def road(self): 
     self.canvas.create_line(50, 50, 450, 50) 
     self.canvas.create_line(50, 100, 450, 100) 

    def crossing(self): 
     self.canvas.create_line(350, 50, 350, 100) 
     self.canvas.create_line(375, 50, 375, 100) 


class Car: 
    def __init__(self, x1, y1, x2, y2, vx, vy, color, example): 
     self.x1 = x1 
     self.y1 = y1 
     self.x2 = x2 
     self.y2 = y2 
     self.vx = vx 
     self.vy = vy 
     self.color = color 
     self.example = example 

    def drawit(self, x1, y1, x2, y2, color): 
     self.example.canvas.create_rectangle(x1, y1, x2, y2, color) 

    def moveit(self, vx, vy): 
     self.example.canvas.move(vx, vy) 

if __name__ == "__main__": 
    root = tk.Tk() 
    my_canvas = Example(root) 
    my_canvas.pack(fill="both", expand=True) 
    mycar = Car(60, 60, 125, 90, 3, 0, "red", my_canvas) 
    mycar.drawit(60, 60, 125, 90, "red") 
    mycar.moveit(3, 0) 
    print (mycar.x1) 
    root.mainloop() 

該錯誤消息

Traceback (most recent call last): File 
"D:/Users/USER/PycharmProjects/untitled/2001.py", line 55, in <module> 
    mycar.drawit(60, 60, 125, 90, "red") File "D:/Users/USER/PycharmProjects/untitled/2001.py", line 45, in drawit 
    self.example.canvas.create_rectangle(x1, y1, x2, y2, color) File "D:\Users\USER\AppData\Local\Programs\Python\Python36-32\lib\tkinter\__init__.py", 
line 2495, in create_rectangle 
    return self._create('rectangle', args, kw) File "D:\Users\USER\AppData\Local\Programs\Python\Python36-32\lib\tkinter\__init__.py", 
line 2474, in _create 
    *(args + self._options(cnf, kw)))) 
_tkinter.TclError: wrong # coordinates: expected 0 or 4, got 5 

Answer 1

create_rectangle需要4個位置參數（X1，Y1，X2，Y2），然後一組的鍵 - 值對的選項。

你需要的東西，如：

self.example.canvas.create_rectangle(x1, y1, x2, y2, fill=color)