Update point.py

Author: moulongzhang

point.py

@@ -0,0 +1,14 @@
+import math
+
+class Point2D:
+    def __init__(self, x, y):
+        self.x = x
+        self.y = y
+
+    def distance_to(self, other):
+        dx = self.x - other.x
+        dy = self.y - other.y
+        return math.sqrt(dx * dx + dy * dy)
+
+    def __str__(self):
+        return f"Point2D({self.x}, {self.y})"