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ch25: added checkeddeco example

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This commit is contained in:
Luciano Ramalho
2021-04-22 19:39:49 -03:00
parent 177d914c9f
commit 8ec5fd0861
4 changed files with 241 additions and 9 deletions
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18
25-class-metaprog/checked/checkedlib.py
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@@ -104,18 +104,18 @@ class Checked:
setattr(subclass, name, Field(name, constructor)) # <5>
def __init__(self, **kwargs: Any) -> None:
for name in self._fields(): # <6>
value = kwargs.pop(name, MISSING) # <7>
setattr(self, name, value) # <8>
if kwargs: # <9>
self.__flag_unknown_attrs(*kwargs)
for name in self._fields(): # <6>
value = kwargs.pop(name, MISSING) # <7>
setattr(self, name, value) # <8>
if kwargs: # <9>
self.__flag_unknown_attrs(*kwargs) # <10>
def __setattr__(self, name: str, value: Any) -> None: # <10>
if name in self._fields(): # <11>
def __setattr__(self, name: str, value: Any) -> None: # <11>
if name in self._fields(): # <12>
cls = self.__class__
descriptor = getattr(cls, name)
descriptor.__set__(self, value) # <12>
else: # <13>
descriptor.__set__(self, value) # <13>
else: # <14>
self.__flag_unknown_attrs(name)
# end::CHECKED_TOP[]