python中依据字典的值进行排序

 

001、依据字典的值对字典进行排序

a、正向排序

>>> dict1 = {"c":30, "a":40, "b":80, "d":20, "e":60}     ## 测试字典
>>> dict1
{'c': 30, 'a': 40, 'b': 80, 'd': 20, 'e': 60}
>>> sorted(dict1.values())
[20, 30, 40, 60, 80]
>>> for i in sorted(dict1.values()):                     ## 依据字典的值进行正向排序
...     for j,k in dict1.items():
...             if i == k:
...                     print(j,k)
...
d 20
c 30
a 40
e 60
b 80

 

b、逆向排序

>>> dict1 = {"c":30, "a":40, "b":80, "d":20, "e":60}       ## 测试字典
>>> dict1
{'c': 30, 'a': 40, 'b': 80, 'd': 20, 'e': 60}
>>> sorted(dict1.values())
[20, 30, 40, 60, 80]
>>> sorted(dict1.values(), reverse = True)
[80, 60, 40, 30, 20]
>>> for i in sorted(dict1.values(), reverse = True):       ## 依据字典的值进行逆向排序
...     for j,k in dict1.items():
...             if k == i:
...                     print(j, k)
...
b 80
e 60
a 40
c 30
d 20

 。