上传者: 38725531
|
上传时间: 2021-05-05 11:57:51
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文件大小: 29KB
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文件类型: PDF
如下所示:
import collections
class Mydict(collections.UserDict):
def __missing__(self, key):
if isinstance(key, str):
raise KeyError(key)
return self[str(key)]
def __contains__(self, key):
return str(key) in self.data
def __setitem__(self, key, item):
self.data[str(key)] = i