def remove_duplicates(dic):
unique_values = {}
for key, value in dic.items():
if value not in unique_values.values():
unique_values[key] = value
return unique_values
dic = {'key1':34, 'key2':89, 'key3':89, 'key4':48, 'key5':50, 'key6':50, 'key7':50}
dic = remove_duplicates(dic)
print(dic)
'''
run:
{'key1': 34, 'key2': 89, 'key4': 48, 'key5': 50}
'''