- 什么是列表(list)?
- 一些按一定顺序排列的数字或字符串
- 列表的例子
- 彩票 (数字列表)
- 作业列表 (字符串列表)
- 购物清单 (字符串列表)
- 列表中的每一项叫做元素
- 列表中的元素的位置叫做索引(index)
- 列表可以是空的
- 向列表添加元素用 append() 函数
- 从列表删除元素用 pop() 函数
- 遍历:将列表中的元素都读出来
lottery = [12, 21, 31, 45, 20]
homework = ["语文", "数学", "编程"]
empty_list = []
homework = ["语文", "数学", "编程"]
print(homework[0])
print(homework[1])
print(homework[2])
homework = ["语文", "数学", "编程"]
homework.append("音乐")
print(homework)
homework = ["语文", "数学", "编程"]
homework.pop(1)
print(homework)
homework = ["语文", "数学", "编程"]
for i in homework:
print(i)
例子:2440 < x < 2470, 750 < y < 770, x乘以y等于1889121, x和y各是多少?
for x in range(2440, 2470):
for y in range(750, 770):
if x*y == 1889121:
print("x is: " + str(x))
print("y is: " + str(y))
![](/assets/屏幕快照 2019-07-10 下午4.53.13.png)