创建一幅图像，可在图像中按住鼠标左键移动绘图形，双击鼠标左键可清除绘制的图形

好的，我可以用Python中的Tkinter库来实现你的要求。以下是代码示例：

from tkinter import *

class PaintApp:
    def __init__(self, master):
        self.master = master
        self.master.title("绘图程序")
        
        # 创建画布
        self.canvas = Canvas(self.master, bg="white")
        self.canvas.pack(fill=BOTH, expand=YES)
        
        # 绑定鼠标事件
        self.canvas.bind("<Button-1>", self.on_mouse_down)
        self.canvas.bind("<B1-Motion>", self.on_mouse_move)
        self.canvas.bind("<Double-Button-1>", self.on_double_click)
        
        # 记录绘制状态
        self.is_drawing = False
        self.prev_x, self.prev_y = None, None
    
    def on_mouse_down(self, event):
        # 开始绘制
        self.is_drawing = True
        self.prev_x, self.prev_y = event.x, event.y
    
    def on_mouse_move(self, event):
        # 绘制图形
        if self.is_drawing:
            x, y = event.x, event.y
            if self.prev_x and self.prev_y:
                self.canvas.create_line(self.prev_x, self.prev_y, x, y)
            self.prev_x, self.prev_y = x, y
    
    def on_double_click(self, event):
        # 清除画布
        self.canvas.delete("all")
        self.is_drawing = False

# 创建主窗口
root = Tk()
app = PaintApp(root)
root.mainloop()

你可以将代码保存为一个Python文件，然后在终端中运行，即可看到绘图程序界面。按住鼠标左键并移动，即可绘制线条；双击鼠标左键，即可清除画布。