# 01. 静态初始化一个空列表list，使用循环向列表中添加 1--10之间的所有整数；

list =[]
> a = 1
> while a <11:
>     list.append(a)
>     a+=1
> print(list)</pre>

image

# 02. 向01中创建的列表list中添加一个字符串“XuanGe”

list.insert(99,"XuanGe")#超过索引在末尾插入
print(list)

image

# 03. 删除下标索引为0的元素

> list.pop(0)
> print(list)

image

# 04. 将下标索引为1的元素改为66

list[1]=66
print(list)

image

# 05. 输出列表中的第3个元素

print(list[2])

image

# 案例2

list = [23, 34, 35, 31, 22, 33, 55, 43, 78, 34]

01：查询出所有的偶数添加到列表list中，并将list1排序

list1 = []
for i in list:
if i % 2 == 0:
list1.append(i)
list1.sort()
print(list1)

image

# 02：将01中排序的list1通过extend添加list2=[[[3,21],2],[4],3],取出元素21

list2 = [[[3, 21], 2], [4], 3]
list1.extend(list2)
print(list1)
print(list1[4][0][1])

image

# 01.给定一个字符串str="helloworld",利用所学字符串的切片知识，反转字符串；

str = "helloworld"
print(str[::-1])

image

# 02.给定一个字符串str="my name is baobao"，将"" (空格)替换为"," ,并输出显示

str="my name is baobao"
print(str.replace(" ",","))

image

# 03.给定一个字符串str="HELLO WORLD HELLO PYTHON"，将str中所有大写字符变为小写

str = "HELLO WORLD HELLO PYTHON"
print(str.lower())

image

# 04.str = "" (空格),li = ["lisi","love","xuexi"],将li中每个字符后面插入str，构造出一个新的字符串并输出

str = " "
li = ["lisi", "love", "xuexi"]
print(str.join(li))

image