如何在字典中重新排序对（python）

Question

I'm trying to reorder a dictionary from:

{'peaches: fruit': 2,
 'cake: dessert, kale: vegetable': 1,
 'carrots: vegetable': 1,
 'pears: fruit': 1}

to:

{'fruit:peaches', 'dessert:cake', etc.}

Would appreciate some advice on how to do that!

Answer 1

That will do it:

import re

old_dict={'peaches: fruit': 2,
          'cake: dessert, kale: vegetable': 1,
          'carrots: vegetable': 1,
          'pears: fruit': 1}

new_dict={re.sub(r'(\w+): (\w+)',r'\2: \1',key):value 
          for key,value in old_dict.items()}