简单的python画图代码_Python使用tkinter制作一个简易的绘图程序四（Python GUI编程）...

好的，以下是一个简单的 Python 绘图程序的代码，使用了 tkinter 库：

import tkinter as tk

class PaintApp:
    def __init__(self, master):
        self.master = master
        self.master.title("Python 绘图程序")
        self.master.geometry("800x600")

        # 创建画布
        self.canvas = tk.Canvas(self.master, bg="white", width=600, height=400)
        self.canvas.pack(side=tk.LEFT, fill=tk.BOTH, expand=True)

        # 创建工具栏
        self.toolbar = tk.Frame(self.master)
        self.toolbar.pack(side=tk.RIGHT, fill=tk.Y)

        self.pen_btn = tk.Button(self.toolbar, text="画笔")
        self.pen_btn.pack(side=tk.TOP)

        self.line_btn = tk.Button(self.toolbar, text="直线")
        self.line_btn.pack(side=tk.TOP)

        self.rect_btn = tk.Button(self.toolbar, text="矩形")
        self.rect_btn.pack(side=tk.TOP)

        self.oval_btn = tk.Button(self.toolbar, text="椭圆")
        self.oval_btn.pack(side=tk.TOP)

        self.clear_btn = tk.Button(self.toolbar, text="清除")
        self.clear_btn.pack(side=tk.TOP)

        # 设置默认工具
        self.current_tool = "pen"

        # 绑定事件
        self.canvas.bind("<B1-Motion>", self.draw)
        self.pen_btn.config(command=lambda: self.set_tool("pen"))
        self.line_btn.config(command=lambda: self.set_tool("line"))
        self.rect_btn.config(command=lambda: self.set_tool("rect"))
        self.oval_btn.config(command=lambda: self.set_tool("oval"))
        self.clear_btn.config(command=self.clear)

    def draw(self, event):
        if self.current_tool == "pen":
            self.canvas.create_oval(event.x, event.y, event.x+5, event.y+5, fill="black")
        elif self.current_tool == "line":
            self.canvas.create_line(event.x, event.y, event.x+10, event.y+10, fill="black")
        elif self.current_tool == "rect":
            self.canvas.create_rectangle(event.x, event.y, event.x+20, event.y+20, fill="black")
        elif self.current_tool == "oval":
            self.canvas.create_oval(event.x, event.y, event.x+30, event.y+15, fill="black")

    def set_tool(self, tool):
        self.current_tool = tool

    def clear(self):
        self.canvas.delete("all")

if __name__ == "__main__":
    root = tk.Tk()
    app = PaintApp(root)
    root.mainloop()

这个程序创建了一个窗口，左侧是画布，右侧是工具栏，可以选择不同的工具进行绘画，支持画笔、直线、矩形、椭圆等基本绘图功能。