列表（list）
是一个人可以存放任意数据类型的容器类，列表里的元素是有序按照索引排列的，元素的索引从0开始，依次增大，可以对列表里的元素进行增删改查！
1.添加数据 append() 函数 参数为要添加的数据 追加到最后的位置
list1 = ['李四', 20, '男', '13012341234']
list1.append('未婚')
print(list1)
结果如下：
D:\Python\Python37\python.exe C:/Users/Administrator/Desktop/小娴python/整理/整理CSDN/笔记四.py
['李四', 20, '男', '13012341234', '未婚']
Process finished with exit code 0
2.插入数据 insert() 函数 参数要插入位置的索引 指定位置添加数据
list1 = ['李四', 20, '男', '13012341234']
list1.insert(1, '未婚')
print(list1)
结果如下：
D:\Python\Python37\python.exe C:/Users/Administrator/Desktop/小娴python/整理/整理CSDN/笔记四.py
['李四', '未婚', 20, '男', '13012341234']
Process finished with exit code 0
3.修改数据 直接给出索引，赋予新值
list1 = ['李四', 20, '男', '13012341234']
list1[1] = 21
print(list1)
结果如下：
D:\Python\Python37\python.exe C:/Users/Administrator/Desktop/小娴python/整理/整理CSDN/笔记四.py
['李四', 21, '男', '13012341234']
Process finished with exit code 0
4.查找元素 直接根据索引查找元素
list1 = ['李四', 20, '男', '13012341234']
result = list1[0]
print(result)
结果如下：
D:\Python\Python37\python.exe C:/Users/Administrator/Desktop/小娴python/整理/整理CSDN/笔记四.py
李四
Process finished with exit code 0
5.遍历列表中的数据
list1 = ['李四', 20, '男', '13012341234']
# 直接遍历列表中的元素
for l in list1:
print(l)
# 根据索引的长度 遍历出每个索引所对应的值
for l in range(0, len(list1)):
print('index:{} 值：{}'.format(l, list1[l]))
# enumerate()函数：枚举 分别列出两个值 索引与对应的值
for index, value in enumerate(list1):
print('index:{} 值：{}'.format(index, value))
结果如下：
D:\Python\Python37\python.exe C:/Users/Administrator/Desktop/小娴python/整理/整理CSDN/笔记四.py
李四
20
男
13012341234
index:0 值：李四
index:1 值：20
index:2 值：男
index:3 值：13012341234
index:0 值：李四
index:1 值：20
index:2 值：男
index:3 值：13012341234
Process finished with exit code 0
6.删除列表中的数据 pop()函数 移除索引所指的值，并给一个返回值
list1 = ['李四', 20, '男', '13012341234']
result = list1.pop(2)
print(result)
print(list1)
结果如下：
D:\Python\Python37\python.exe C:/Users/Administrator/Desktop/小娴python/整理/整理CSDN/笔记四.py
男
['李四', 20, '13012341234']
Process finished with exit code 0
7.直接根据索引删除元素
list1 = ['李四', 20, '男', '13012341234']
del list1[3]
print(list1)
结果如下：
D:\Python\Python37\python.exe C:/Users/Administrator/Desktop/小娴python/整理/整理CSDN/笔记四.py
['李四', 20, '男']
Process finished with exit code 0
8.移除元素 remove()
list1 = ['李四', 20, '男', '13012341234']
list1.remove(20)
print(list1)
结果如下：
D:\Python\Python37\python.exe C:/Users/Administrator/Desktop/小娴python/整理/整理CSDN/笔记四.py
['李四', '男', '13012341234']
Process finished with exit code 0
9.删除所有数据
list1 = ['李四', 20, '男', '13012341234']
list1.clear()
print(list1)
结果如下：
D:\Python\Python37\python.exe C:/Users/Administrator/Desktop/小娴python/整理/整理CSDN/笔记四.py
[]
Process finished with exit code 0
10.拷贝列表 copy()
list1 = ['李四', 20, '男', '13012341234']
list2 = list1.copy()
print(list2)
结果如下：
D:\Python\Python37\python.exe C:/Users/Administrator/Desktop/小娴python/整理/整理CSDN/笔记四.py
['李四', 20, '男', '13012341234']
Process finished with exit code 0
11.计算列表中某个元素出现的次数 count()
list1 = ['李四', 20, '男', '13012341234', 20]
result = list1.count(20)
print(result)
结果如下：
D:\Python\Python37\python.exe C:/Users/Administrator/Desktop/小娴python/整理/整理CSDN/笔记四.py
2
Process finished with exit code 0
12.追加多个元素 extend() 追加的多个元素可以是一个列表、一个集合或者一个元组。
list1 = ['李四', 20, '男', '13012341234']
list2 = ('王五', 21, '男', '12345678946')
list3 = ['小红', 22, '女', '12345678915']
list4 = {'小明', 23, '女', '12345638914'}
list1.extend(list2)
list1.extend(list3)
list1.extend(list4)
print(list1)
结果如下：
D:\Python\Python37\python.exe C:/Users/Administrator/Desktop/小娴python/整理/整理CSDN/笔记四.py
['李四', 20, '男', '13012341234', '王五', 21, '男', '12345678946', '小红', 22, '女', '12345678915', '小明', '女', '12345638914', 23]
Process finished with exit code 0
13.获取某个元素的索引 index()
list1 = ['李四', 20, '男', '13012341234']
result = list1.index('男')
print(result)
结果如下：
D:\Python\Python37\python.exe C:/Users/Administrator/Desktop/小娴python/整理/整理CSDN/笔记四.py
2
Process finished with exit code 0
14.排序 sort()默认从小到大
list1 = [5, 1, 2, 6, 7, 8]
print(list1)
list1.sort()
print(list1)
结果如下：
D:\Python\Python37\python.exe C:/Users/Administrator/Desktop/小娴python/整理/整理CSDN/笔记四.py
[5, 1, 2, 6, 7, 8]
[1, 2, 5, 6, 7, 8]
Process finished with exit code 0
从小到大
list1 = [5, 1, 2, 6, 7, 8]
print(list1)
list1.reverse()
print(list1)
结果如下：
D:\Python\Python37\python.exe C:/Users/Administrator/Desktop/小娴python/整理/整理CSDN/笔记四.py
[5, 1, 2, 6, 7, 8]
[8, 7, 6, 2, 1, 5]
Process finished with exit code 0