Add test.py with multiply function

test.py

@@ -0,0 +1,8 @@
+def multiply(a, b):
+    """计算两个数字的乘积并返回结果"""
+    return a * b
+
+if __name__ == "__main__":
+    # 测试函数
+    result = multiply(3, 4)
+    print(f"3 * 4 = {result}")