# (Dictionary) #

## 1 dict ##

List  tuple 

listlist 

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



 list 

```python
name = [['', '131456780001'], ['', '131456780002'], ['', '131456780003'], ['', '131456780004'], ['', '131456780005']]
```





 dict Python  dictdict  dictionary Java  JAVA  map-key-value

```python
name = {'': '131456780001', '': '131456780002', '': '131456780003', '': '131456780004', '': '131456780005'}
```


## 2dict  ##



(key=>value)(:)(,)({}) ,

```python
dict = {key1 : value1, key2 : value2 }
```



 dict

```python
dict1={'liangdianshui':'111111' ,'twowater':'222222' ,'':'333333'}
dict2={'abc':1234,1234:'abc'}
```


## 3 dict  ##




```python
name = {'': '131456780001', '': '131456780002', '': '131456780003', '': '131456780004', '': '131456780005'}

print(name[''])
```




```
131456780002
```

 key   Value 




## 4 dict  ##

//

```python
#-*-coding:utf-8-*-
dict1={'liangdianshui':'111111' ,'twowater':'222222' ,'':'333333'}
print(dict1)
# 
dict1['jack']='444444'
print(dict1)
# 
dict1['liangdianshui']='555555'
print(dict1)
```



```
{'liangdianshui': '111111', 'twowater': '222222', '': '333333'}
{'liangdianshui': '111111', 'twowater': '222222', '': '333333', 'jack': '444444'}
{'liangdianshui': '555555', 'twowater': '222222', '': '333333', 'jack': '444444'}
```

## 5 dict  ##

 `del`  dict  dict 

 `clear()` 

```python
#-*-coding:utf-8-*-
dict1={'liangdianshui':'111111' ,'twowater':'222222' ,'':'333333'}
print(dict1)
#  key 
del dict1['twowater']
print(dict1)
# 
dict1.clear()
print(dict1)
# 
del dict1
```



```
{'liangdianshui': '111111', 'twowater': '222222', '': '333333'}
{'liangdianshui': '111111', '': '333333'}
{}
```

## 6 dict  ##

(1) dict  dict 



```python
#-*-coding:utf-8-*-
dict1={'liangdianshui':'111111' ,'twowater':'222222' ,'':'333333','twowater':'444444'}
print(dict1)
print(dict1['twowater'])
```



```
{'liangdianshui': '111111', 'twowater': '444444', '': '333333'}
444444
```


(2) dict 



```python
#-*-coding:utf-8-*-
dict1={'liangdianshui':'111111' ,123:'222222' ,(123,'tom'):'333333','twowater':'444444'}
print(dict1)
```



```
{'liangdianshui': '111111', 123: '222222', (123, 'tom'): '333333', 'twowater': '444444'}
```

(3) dict  key 

 list dict 

* key

* 

list

* 

* 


## 7dict   ##

|||
|---------|--------|
|len(dict)||
|str(dict)||
|type(variable)||
|dict.clear()||
|dict.copy()||
|dict.values()||
|popitem()||
|dict.items()|(, ) |