字典更改键值Python
我有一本字典,形式如下:字典更改键值Python,python,for-loop,dictionary,Python,For Loop,Dictionary,我有一本字典,形式如下: {0.1: (0.7298579,0.7987254)} 它对应于:{test\u size:(train\u error,test\u error)} 我想将键值test\u size更改为1-test\u size。以便我们获得: {0.9: (0.7298579, 0.7987254)} 我该怎么做 您可以这样做: >>> d = {0.1:(0.7298579,0.7987254)} >>> new_d = {1-k: v
{0.1: (0.7298579,0.7987254)}
它对应于:{test\u size:(train\u error,test\u error)}
我想将键值test\u size
更改为1-test\u size
。以便我们获得:
{0.9: (0.7298579, 0.7987254)}
我该怎么做 您可以这样做:
>>> d = {0.1:(0.7298579,0.7987254)}
>>> new_d = {1-k: v for k, v in d.items()}
>>> new_d
{0.9: (0.7298579, 0.7987254)}
您可以这样做:
>>> d = {0.1:(0.7298579,0.7987254)}
>>> new_d = {1-k: v for k, v in d.items()}
>>> new_d
{0.9: (0.7298579, 0.7987254)}
如果dict不是非常大,你可以创建一个新的dict并用新的键复制旧的dict。如果dict不是非常大,你可以创建一个新的dict并用新的键复制旧的dict。试试dictionary的
.pop()
方法。试试dictionary的.pop()
方法。