python中字典顺序逆转

 

>>> test1 = dict(key8="ccc",key3="ete",key2="iii",key4 = "wwww") >>> type(test1) <class 'dict'>
>>> len(test1) 4
>>> for i,j in test1.items(): print(i,j) key8 ccc key3 ete key2 iii key4 wwww >>> for i,j in reversed(test1.items()): print(i,j) key4 wwww key2 iii key3 ete key8 ccc >>> test2 = {} >>> for i,j in reversed(test1.items()): test2[i] = j >>> test2 {'key4': 'wwww', 'key2': 'iii', 'key3': 'ete', 'key8': 'ccc'} >>> test1 {'key8': 'ccc', 'key3': 'ete', 'key2': 'iii', 'key4': 'wwww'}