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                            >[success] # itemgetter 指定字典的k，v進行排序

直接使用 itemgetter 會比 普通使用 sorted 和max min 要快

>[danger] ##### sorted排序

~~~
from operator import itemgetter


rows = [
    {"fname": 'w','lname': 's', "uid": "1003"},
    {"fname": 'q','lname': 's', "uid": "1004"},
    {"fname": 'e','lname': 's', "uid": "1006"},
]

print(sorted(rows,key=itemgetter('fname')))

打印結果：
[{'lname': 's', 'uid': '1006', 'fname': 'e'}, 
{'lname': 's', 'uid': '1004', 'fname': 'q'},
{'lname': 's', 'uid': '1003', 'fname': 'w'}]

~~~

>[danger] ##### max/min 打印最大值最小值

* 推薦使用itemgetter
~~~
from operator import itemgetter


rows = [
    {"fname": 'w','lname': 's', "uid": "1003"},
    {"fname": 'q','lname': 's', "uid": "1004"},
    {"fname": 'e','lname': 's', "uid": "1006"},
]

print(min(rows,key=itemgetteritemgetter('fname')))
print(min(rows,key=lambda b:b['fname']))

打印結果：
{'lname': 's', 'uid': '1006', 'fname': 'e'}
{'lname': 's', 'uid': '1006', 'fname': 'e'}
~~~
                    
                
        
                
            
        
                
    
                
    
                
        
                
    
                

                







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