feat: updates

math_test.py

@@ -0,0 +1,10 @@
+#!/usr/bin/env python3
+
+if __name__ == "__main__":
+    print(321 + 12)     # 加法运算，输出333
+    print(321 - 12)     # 减法运算，输出309
+    print(321 * 12)     # 乘法运算，输出3852
+    print(321 / 12)     # 除法运算，输出26.75
+    print(321 // 12)    # 整除运算，输出26
+    print(321 % 12)     # 求模运算，输出9
+    print(321 ** 12)    # 求幂运算，输出1196906950228928915420617322241