def _asarray_tuplesafe(values, dtype=None):
from pandas.core.index import Index
if not (isinstance(values, (list, tuple)) or hasattr(values, '__array__')):
values = list(values)
elif isinstance(values, Index):
return values.values
if isinstance(values, list) and dtype in [np.object_, object]:
return lib.list_to_object_array(values)
result = np.asarray(values, dtype=dtype)
if issubclass(result.dtype.type, compat.string_types):
result = np.asarray(values, dtype=object)
if result.ndim == 2:
if isinstance(values, list):
return lib.list_to_object_array(values)
else:
# Making a 1D array that safely contains tuples is a bit tricky
# in numpy, leading to the following
try:
result = np.empty(len(values), dtype=object)
result[:] = values
except ValueError:
# we have a list-of-list
result[:] = [tuple(x) for x in values]
return result
def _asarray_tuplesafe(values, dtype=None):
from pandas.core.index import Index
if not (isinstance(values, (list, tuple)) or hasattr(values, '__array__')):
values = list(values)
elif isinstance(values, Index):
return values.values
if isinstance(values, list) and dtype in [np.object_, object]:
return lib.list_to_object_array(values)
result = np.asarray(values, dtype=dtype)
if issubclass(result.dtype.type, compat.string_types):
result = np.asarray(values, dtype=object)
if result.ndim == 2:
if isinstance(values, list):
return lib.list_to_object_array(values)
else:
# Making a 1D array that safely contains tuples is a bit tricky
# in numpy, leading to the following
try:
result = np.empty(len(values), dtype=object)
result[:] = values
except ValueError:
# we have a list-of-list
result[:] = [tuple(x) for x in values]
return result
def maybe_convert_platform(values):
""" try to do platform conversion, allow ndarray or list here """
if isinstance(values, (list, tuple)):
values = lib.list_to_object_array(list(values))
if getattr(values, 'dtype', None) == np.object_:
if hasattr(values, '_values'):
values = values._values
values = lib.maybe_convert_objects(values)
return values
def maybe_convert_platform(values):
""" try to do platform conversion, allow ndarray or list here """
if isinstance(values, (list, tuple)):
values = lib.list_to_object_array(list(values))
if getattr(values, 'dtype', None) == np.object_:
if hasattr(values, '_values'):
values = values._values
values = lib.maybe_convert_objects(values)
return values
def _zip2(*args):
return lib.list_to_object_array(lzip(*args))
def _zip2(*args):
return lib.list_to_object_array(lzip(*args))
