Python metaprogramming help
- by Timmy
im looking into mongoengine, and i wanted to make a class an "EmbeddedDocument" dynamically, so i do this
def custom(cls):
cls = type( cls.__name__, (EmbeddedDocument,), cls.__dict__.copy() )
cls.a = FloatField(required=True)
cls.b = FloatField(required=True)
return cls
A = custom( A )
and tried it on some classes, but its not doing some of the base class's init or sumthing
in BaseDocument
def __init__(self, **values):
self._data = {}
# Assign initial values to instance
for attr_name, attr_value in self._fields.items():
if attr_name in values:
setattr(self, attr_name, values.pop(attr_name))
else:
# Use default value if present
value = getattr(self, attr_name, None)
setattr(self, attr_name, value)
but this never gets used, thus never setting ._data, and giving me errors. how do i do this?
