def _list_of_dict_to_arrays(
data: list[dict],
columns: Index | None,
) -> tuple[np.ndarray, Index]:
"""
Convert list of dicts to numpy arrays
if `columns` is not passed, column names are inferred from the records
- for OrderedDict and dicts, the column names match
the key insertion-order from the first record to the last.
- For other kinds of dict-likes, the keys are lexically sorted.
Parameters
----------
data : iterable
collection of records (OrderedDict, dict)
columns: iterables or None
Returns
-------
content : np.ndarray[object, ndim=2]
columns : Index
"""
if columns is None:
gen = (list(x.keys()) for x in data)
sort = not any(isinstance(d, dict) for d in data)
pre_cols = lib.fast_unique_multiple_list_gen(gen, sort=sort)
columns = ensure_index(pre_cols)
# assure that they are of the base dict class and not of derived
# classes
data = [d if type(d) is dict else dict(d) for d in data]
content = lib.dicts_to_array(data, list(columns))
return content, columns
def _list_of_dict_to_arrays(
data: List[Dict],
columns: Union[Index, List],
) -> Tuple[List[Scalar], Union[Index, List[Axis]]]:
"""
Convert list of dicts to numpy arrays
if `columns` is not passed, column names are inferred from the records
- for OrderedDict and dicts, the column names match
the key insertion-order from the first record to the last.
- For other kinds of dict-likes, the keys are lexically sorted.
Parameters
----------
data : iterable
collection of records (OrderedDict, dict)
columns: iterables or None
Returns
-------
tuple
arrays, columns
"""
if columns is None:
gen = (list(x.keys()) for x in data)
sort = not any(isinstance(d, dict) for d in data)
columns = lib.fast_unique_multiple_list_gen(gen, sort=sort)
# assure that they are of the base dict class and not of derived
# classes
data = [(type(d) is dict) and d or dict(d) for d in data]
content = lib.dicts_to_array(data, list(columns))
return content, columns
def _list_of_dict_to_arrays(data, columns, coerce_float=False, dtype=None):
"""Convert list of dicts to numpy arrays
if `columns` is not passed, column names are inferred from the records
- for OrderedDict and dicts, the column names match
the key insertion-order from the first record to the last.
- For other kinds of dict-likes, the keys are lexically sorted.
Parameters
----------
data : iterable
collection of records (OrderedDict, dict)
columns: iterables or None
coerce_float : bool
dtype : np.dtype
Returns
-------
tuple
arrays, columns
"""
if columns is None:
gen = (list(x.keys()) for x in data)
sort = not any(isinstance(d, dict) for d in data)
columns = lib.fast_unique_multiple_list_gen(gen, sort=sort)
# assure that they are of the base dict class and not of derived
# classes
data = [(type(d) is dict) and d or dict(d) for d in data]
content = list(lib.dicts_to_array(data, list(columns)).T)
return _convert_object_array(content,
columns,
dtype=dtype,
coerce_float=coerce_float)
def _list_of_dict_to_arrays(data, columns, coerce_float=False, dtype=None):
if columns is None:
gen = (list(x.keys()) for x in data)
sort = not any(isinstance(d, OrderedDict) for d in data)
columns = lib.fast_unique_multiple_list_gen(gen, sort=sort)
# assure that they are of the base dict class and not of derived
# classes
data = [(type(d) is dict) and d or dict(d) for d in data]
content = list(lib.dicts_to_array(data, list(columns)).T)
return _convert_object_array(content, columns, dtype=dtype,
coerce_float=coerce_float)
def _list_of_dict_to_arrays(data, columns, coerce_float=False, dtype=None):
if columns is None:
gen = (list(x.keys()) for x in data)
sort = not any(isinstance(d, OrderedDict) for d in data)
columns = lib.fast_unique_multiple_list_gen(gen, sort=sort)
# assure that they are of the base dict class and not of derived
# classes
data = [(type(d) is dict) and d or dict(d) for d in data]
content = list(lib.dicts_to_array(data, list(columns)).T)
return _convert_object_array(content, columns, dtype=dtype,
coerce_float=coerce_float)
