Python 互换字典的键值对实例

1.zip dic = {'a':1, 'b':2, 'c':3} dic_new = dict(zip(dic.values(), dic.keys())) print(dic_new) # {1: 'a', 2: 'b', 3: 'c'} 2.循环 dic = {'a':1, 'b':2, 'c':3} dic_new = {} for key, val in dic.items(): dic_new[val] = key print(dic_new) # {1: 'a', 2: 'b', 3: 'c'} 3.列表生成器 dic_new = dict([val, key] for