# List #

## 1 List 

List  Python  

 List 





![](http://twowaterimage.oss-cn-beijing.aliyuncs.com/2019-08-31-080527.png)







![](http://twowaterimage.oss-cn-beijing.aliyuncs.com/2019-08-31-080835.png)

 N 


## 2 List ##



![](http://twowaterimage.oss-cn-beijing.aliyuncs.com/2019-08-31-081342.png)

 `[]` 





```python
list1=['','twowter','liangdianshui',123]
```





![](http://twowaterimage.oss-cn-beijing.aliyuncs.com/2019-08-31-081912.png)



![](http://twowaterimage.oss-cn-beijing.aliyuncs.com/2019-08-31-081951.png)


## 3 List ##

 3 









```python
name = ['', '', '', '', '']

# 
print(name[2])
# 
print(name[0:2])
```



![](http://twowaterimage.oss-cn-beijing.aliyuncs.com/2019-08-31-090321.png)

 `name`  `name[2]`  

 2  3 

 0  1 



  `name[2]`  

 `name[0:2]` 





 2  3 

****

 `name[0:2]`  0  2  2 





![](http://twowaterimage.oss-cn-beijing.aliyuncs.com/2019-08-31-091524.png)



![](http://twowaterimage.oss-cn-beijing.aliyuncs.com/2019-08-31-091624.png)




    ## 4 List ##





 append() 

```python
name = ['', '', '', '', '']


# 
name[1]='2'
print(name)

#  append() 
name.append('')
print(name)
```



![](http://twowaterimage.oss-cn-beijing.aliyuncs.com/2019-08-31-092406.png)


## 5 List  ##





 del 

```python
name = ['', '', '', '', '']

print(name)

#  del 
del name[3]
print(name)
```

:

![](http://twowaterimage.oss-cn-beijing.aliyuncs.com/2019-08-31-092705.png)

 `` 


## 6List ##

 `+`   `*`  `+` `*`  

|Python |||
|-----------|-----|-----|
|len([1, 2, 3])|3||
|[1, 2, 3] + [4, 5, 6]|	[1, 2, 3, 4, 5, 6]|	|
|['Hi!'] * 4|['Hi!', 'Hi!', 'Hi!', 'Hi!']||
|3 in [1, 2, 3]|True||
|for x in [1, 2, 3]: print x,|1 2 3||


## 7List & ##

|&||
|----|----|
|len(list)||
|max(list)||
|min(list)||
|list(seq)||
|list.append(obj)||
|list.count(obj)||
|list.extend(seq)||
|list.index(obj)||
|list.insert(index, obj)||
|list.pop(obj=list[-1])||
|list.remove(obj)||
|list.reverse()||
|list.sort([func])||


## 8 ##


 List 



```python
#-*-coding:utf-8-*-
#-----------------------list----------------------------------

# 1. list 
user=['liangdianshui','twowater','']
print('1.')
print(user)

# 2. len()  list 
len(user)
print('\n2.')
print(len(user))

# 3. list 0
print('\n3.')
print(user[0]+','+user[1]+','+user[2])

# 4. list 
user.append('')
print('\n4.')
print(user)

# 5. VIP  insert 
#  len(user)-1
user.insert(0,'VIP')
print('\n5.')
print(user)

# 6.'VIP'pop()  list 
user.pop()
print('\n6.')
print(user)

# 7.liangdianshui
# pop(i)i
user.pop(1)
print('\n7.list')
print(user)

# 8.
user[2]=''
print('\n8.')
print(user)

# 9.
#  list 
#  list  list
newUser=[['VIP',11111],['twowater',22222],['',33333]]
print('\n9.list')
print(newUser)

```

![list](http://upload-images.jianshu.io/upload_images/2136918-65d31cae9f8bb34d.png?imageMogr2/auto-orient/strip%7CimageView2/2/w/1240)