save project

diy2.py

-i = 5   # 行
-j = 3   # 列
-# 使用变量i和j，代替乘法算式里面的元素，打印出单个乘法算式
+students = ["u","x","b","b"]
+
+students.remove("b")
+print(students)
+
+students.append("n")
+print(students)
+
+red = students[:2]
+blue = students[2:]
+print(red)
+print(blue)
+
+
+