A painting application with Tkinter in Python

python/paint.py

@@ -0,0 +1,38 @@
+import tkinter as tk
+
+class PaintApp:
+    def __init__(self, root):
+        self.root = root
+        self.root.title("Cool Paint App")
+
+        self.canvas = tk.Canvas(root, bg="white")
+        self.canvas.pack(fill=tk.BOTH, expand=True)
+
+        self.button_clear = tk.Button(root, text="Clear", command=self.clear_canvas)
+        self.button_clear.pack()
+
+        self.canvas.bind("<Button-1>", self.start_paint)
+        self.canvas.bind("<B1-Motion>", self.paint)
+
+        self.old_x = None
+        self.old_y = None
+
+    def start_paint(self, event):
+        self.old_x = event.x
+        self.old_y = event.y
+
+    def paint(self, event):
+        new_x = event.x
+        new_y = event.y
+        if self.old_x and self.old_y:
+            self.canvas.create_line(self.old_x, self.old_y, new_x, new_y, fill="black", width=2)
+        self.old_x = new_x
+        self.old_y = new_y
+
+    def clear_canvas(self):
+        self.canvas.delete("all")
+
+if __name__ == "__main__":
+    root = tk.Tk()
+    app = PaintApp(root)
+    root.mainloop()