Python 2:
res = dict((v,k) for k,v in a.iteritems())
Python 3(感谢@erik):
res = dict((v,k) for k,v in a.items())
如何与字典中的值交换键?
Python 2:
res = dict((v,k) for k,v in a.iteritems())
Python 3(感谢@erik):
res = dict((v,k) for k,v in a.items())