unpack a nested dataclass and named tuple
I want to create a function that unpacks nested dataclasses and namedtuples (or a combination of both)
my attempt
I found this answer about how to unpack a named tuple, and i am simply extending it:
the unpack function
def unpack(obj):
if isinstance(obj, dict):
return {key: unpack(value) for key, value in obj.items()}
elif isinstance(obj, list):
return [unpack(value) for value in obj]
elif is_named_tuple_instance(obj):
return {key: unpack(value) for key, value in obj._asdict().items()}
elif is_data_class_instance(obj):
return {key: unpack(getattr(obj, key)) for key in obj.__dataclass_fields__.keys()}
elif isinstance(obj, tuple):
return tuple(unpack(value) for value in obj)
else:
return obj
the is_data_class_instance function:
def is_data_class_instance(obj):
data_class_attrs = {'__dataclass_fields__', '__dataclass_params__'}
return set(dir(obj)).intersection(data_class_attrs) == data_class_attrs
side note, would this be acceptable type hints ?
from typing import NamedTuple, Any, NewType, Union
DataClass = NewType('DataClass', Any)
def unpack(obj: Union[DataClass, NamedTuple, Any]) -> Union[tuple, list, dict, Any]:
...
python python-3.x
asked Dec 18 at 11:05
moshevi
1314
add a comment |
I want to create a function that unpacks nested dataclasses and namedtuples (or a combination of both)
my attempt
I found this answer about how to unpack a named tuple, and i am simply extending it:
the unpack function
def unpack(obj):
if isinstance(obj, dict):
return {key: unpack(value) for key, value in obj.items()}
elif isinstance(obj, list):
return [unpack(value) for value in obj]
elif is_named_tuple_instance(obj):
return {key: unpack(value) for key, value in obj._asdict().items()}
elif is_data_class_instance(obj):
return {key: unpack(getattr(obj, key)) for key in obj.__dataclass_fields__.keys()}
elif isinstance(obj, tuple):
return tuple(unpack(value) for value in obj)
else:
return obj
the is_data_class_instance function:
def is_data_class_instance(obj):
data_class_attrs = {'__dataclass_fields__', '__dataclass_params__'}
return set(dir(obj)).intersection(data_class_attrs) == data_class_attrs
side note, would this be acceptable type hints ?
from typing import NamedTuple, Any, NewType, Union
DataClass = NewType('DataClass', Any)
def unpack(obj: Union[DataClass, NamedTuple, Any]) -> Union[tuple, list, dict, Any]:
...
python python-3.x
asked Dec 18 at 11:05
moshevi
1314
add a comment |
I want to create a function that unpacks nested dataclasses and namedtuples (or a combination of both)
my attempt
I found this answer about how to unpack a named tuple, and i am simply extending it:
the unpack function
def unpack(obj):
if isinstance(obj, dict):
return {key: unpack(value) for key, value in obj.items()}
elif isinstance(obj, list):
return [unpack(value) for value in obj]
elif is_named_tuple_instance(obj):
return {key: unpack(value) for key, value in obj._asdict().items()}
elif is_data_class_instance(obj):
return {key: unpack(getattr(obj, key)) for key in obj.__dataclass_fields__.keys()}
elif isinstance(obj, tuple):
return tuple(unpack(value) for value in obj)
else:
return obj
the is_data_class_instance function:
def is_data_class_instance(obj):
data_class_attrs = {'__dataclass_fields__', '__dataclass_params__'}
return set(dir(obj)).intersection(data_class_attrs) == data_class_attrs
side note, would this be acceptable type hints ?
from typing import NamedTuple, Any, NewType, Union
DataClass = NewType('DataClass', Any)
def unpack(obj: Union[DataClass, NamedTuple, Any]) -> Union[tuple, list, dict, Any]:
...
python python-3.x
asked Dec 18 at 11:05
moshevi
1314
I want to create a function that unpacks nested dataclasses and namedtuples (or a combination of both)
my attempt
I found this answer about how to unpack a named tuple, and i am simply extending it:
the unpack function
def unpack(obj):
if isinstance(obj, dict):
return {key: unpack(value) for key, value in obj.items()}
elif isinstance(obj, list):
return [unpack(value) for value in obj]
elif is_named_tuple_instance(obj):
return {key: unpack(value) for key, value in obj._asdict().items()}
elif is_data_class_instance(obj):
return {key: unpack(getattr(obj, key)) for key in obj.__dataclass_fields__.keys()}
elif isinstance(obj, tuple):
return tuple(unpack(value) for value in obj)
else:
return obj
the is_data_class_instance function:
def is_data_class_instance(obj):
data_class_attrs = {'__dataclass_fields__', '__dataclass_params__'}
return set(dir(obj)).intersection(data_class_attrs) == data_class_attrs
side note, would this be acceptable type hints ?
from typing import NamedTuple, Any, NewType, Union
DataClass = NewType('DataClass', Any)
def unpack(obj: Union[DataClass, NamedTuple, Any]) -> Union[tuple, list, dict, Any]:
...
python python-3.x
python python-3.x
asked Dec 18 at 11:05
moshevi
1314
asked Dec 18 at 11:05
moshevi
1314
asked Dec 18 at 11:05
moshevi
1314
asked Dec 18 at 11:05
moshevi
1314
asked Dec 18 at 11:05
moshevi
1314
1314
add a comment |
add a comment |
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