Python删除字典中value相同的所有项

Question

Write a Python function to remove items with identical values from Dictionary.
Input: {1:'a',2:'b',3:'a'}, Output: {2:'b'}
Input: {1:'a',2:'a',3:'a'}, Output:{}

Answer 1

dct = {1:'a',2:'b',3:'a'}
dct2 = {1:'a',2:'a',3:'a'}

print({k:v for k, v in dct.items() if list(dct.values()).count(v) == 1})
print({k:v for k, v in dct2.items() if list(dct2.values()).count(v) == 1})