Python numpy 模块，generic() 实例源码
我们从Python开源项目中，提取了以下50个代码示例，用于说明如何使用numpy.generic()。
def write_metadata(path, meta='.meta.yaml', **params):
"""Writes metadata for a dataset.
Args:
path (str): path to **dataset** (not meta file) whose metadata
is to be written. If the meta file already exists, it will be
overwritten.
meta (str): suffix identifying the dataset's meta file
**params: all other keyword arguments are treated as dataset attributes,
and added to the meta file
"""
if 'n_channels' in params:
del params['n_channels']
if 'n_samples' in params:
del params['n_samples']
if os.path.isdir(path):
metafile = os.path.join(path, meta[1:])
else:
metafile = path + meta
for k, v in params.items():
if isinstance(v, (np.ndarray, np.generic)):
params[k] = v.tolist()
with codecs.open(metafile, 'w', encoding='utf-8') as yaml_file:
yaml_file.write(yaml.safe_dump(params, default_flow_style=False))
def json_conversion(obj):
"""Encode additional objects to JSON."""
try:
# numpy isn't an explicit dependency of bowtie
# so we can't assume it's available
import numpy as np
if isinstance(obj, (np.ndarray, np.generic)):
return obj.tolist()
except ImportError:
pass
try:
# pandas isn't an explicit dependency of bowtie
# so we can't assume it's available
import pandas as pd
if isinstance(obj, pd.Index):
return obj.tolist()
except ImportError:
pass
if isinstance(obj, (datetime, time, date)):
return obj.isoformat()
raise TypeError('Not sure how to serialize {} of type {}'.format(obj, type(obj)))
def encoders(obj):
"""Convert Python object to msgpack encodable ones."""
try:
# numpy isn't an explicit dependency of bowtie
# so we can't assume it's available
import numpy as np
if isinstance(obj, (np.ndarray, np.generic)):
# https://docs.scipy.org/doc/numpy/reference/arrays.scalars.html
return obj.tolist()
except ImportError:
pass
try:
# pandas isn't an explicit dependency of bowtie
# so we can't assume it's available
import pandas as pd
if isinstance(obj, pd.Index):
return obj.tolist()
except ImportError:
pass
if isinstance(obj, (datetime, time, date)):
return obj.isoformat()
return obj
def fmt(obj, nest_level=0):
""" Format any common object """
if nest_level > 10:
return ""
if isinstance(obj, float):
return "{0:.3f}".format(obj)
if isinstance(obj, list):
return "(" + ",".join(map(lambda x: fmt(x, nest_level + 1), obj)) + ")"
if isinstance(obj, (numpy.ndarray, numpy.generic)):
return fmt(obj.tolist(), nest_level + 1)
if isinstance(obj, dict):
pairs = map(lambda x, y: "(" + fmt(x) + "," + fmt(y, nest_level + 1) + ")", obj.items())
return fmt(pairs)
if isinstance(obj, Vector3):
return "({},{},{})".format(fmt(obj.x), fmt(obj.y), fmt(obj.z))
if isinstance(obj, Quaternion):
return "({},{},{},{})".format(fmt(obj.x), fmt(obj.y), fmt(obj.z), fmt(obj.w))
# print " obj " + str(obj) + " is of type " + str(type(obj))
return str(obj)
def np2gdal_dtype(d):
"""
Get GDAL RasterBand datatype that corresponds with NumPy datatype
Input should be numpy array or numpy dtype
"""
dt_dict = gdal_array.codes
if isinstance(d, (np.ndarray, np.generic)):
d = d.dtype
#This creates dtype from another built-in type
#d = np.dtype(d)
if isinstance(d, np.dtype):
if d.name == 'int8':
gdal_dt = 1
elif d.name == 'bool':
#Write out as Byte
gdal_dt = 1
else:
gdal_dt = list(dt_dict.keys())[list(dt_dict.values()).index(d)]
else:
print("Input must be NumPy array or NumPy dtype")
gdal_dt = None
return gdal_dt
def test_describe_typefiltering_category_bool(self):
df = DataFrame({'A_cat': pd.Categorical(['foo', 'foo', 'bar'] * 8),
'B_str': ['a', 'b', 'c', 'd'] * 6,
'C_bool': [True] * 12 + [False] * 12,
'D_num': np.arange(24.) + .5,
'E_ts': tm.makeTimeSeries()[:24].index})
desc = df.describe()
expected_cols = ['D_num']
expected = DataFrame(dict((k, df[k].describe())
for k in expected_cols),
columns=expected_cols)
assert_frame_equal(desc, expected)
desc = df.describe(include=["category"])
self.assertTrue(desc.columns.tolist() == ["A_cat"])
# 'all' includes numpy-dtypes + category
desc1 = df.describe(include="all")
desc2 = df.describe(include=[np.generic, "category"])
assert_frame_equal(desc1, desc2)
def __setitem__(self, in_slice, value):
"""Set ndarray value"""
if not self.writable:
raise ValueError('trying to assign to a readonly NDArray')
if isinstance(in_slice, int):
sliced_arr = self._at(in_slice)
sliced_arr[:] = value
return
if not isinstance(in_slice, slice) or in_slice.step is not None:
raise ValueError('NDArray only support continuous slicing on axis 0')
if in_slice.start is not None or in_slice.stop is not None:
sliced_arr = self._slice(in_slice.start, in_slice.stop)
sliced_arr[:] = value
return
if isinstance(value, NDArray):
if value.handle is not self.handle:
value.copyto(self)
elif isinstance(value, numeric_types):
NDArray._set_value(float(value), out=self)
elif isinstance(value, (np.ndarray, np.generic)):
self._sync_copyfrom(value)
else:
raise TypeError('type %s not supported' % str(type(value)))
def read_attr(self, path, attr_name, default=False):
"""Read an attribute of an HDF5 group."""
_check_hdf5_path(self._h5py_file, path)
attrs = self._h5py_file[path].attrs
if attr_name in attrs:
try:
out = attrs[attr_name]
if (isinstance(out, (np.ndarray, np.generic)) and
out.dtype.kind == 'S'):
out = out.tostring().decode('UTF-8')
out = out.replace('\x00', '')
return out
except (TypeError, IOError):
logger.debug("Unable to read attribute `%s` at `%s`.",
attr_name, path)
return
elif default is False:
raise KeyError("The attribute '{0:s}' ".format(attr_name) +
"at `{}` doesn't exist.".format(path))
return default
def capture_frame(self, frame):
if not isinstance(frame, (np.ndarray, np.generic)):
raise error.InvalidFrame(
'Wrong type {} for {} (must be np.ndarray or np.generic)'.format(type(frame), frame))
if frame.shape != self.frame_shape:
raise error.InvalidFrame(
"Your frame has shape {}, but the VideoRecorder is configured for shape {}.".format(
frame.shape, self.frame_shape))
if frame.dtype != np.uint8:
raise error.InvalidFrame(
"Your frame has data type {}, but we require uint8 (i.e. RGB values from 0-255).".format(frame.dtype))
if distutils.version.LooseVersion(np.__version__) >= distutils.version.LooseVersion('1.9.0'):
self.proc.stdin.write(frame.tobytes())
else:
self.proc.stdin.write(frame.tostring())
def get_generic_name():
# may need to make this a search for the first non-kdllib reference
# make generic name from highest calling context
prev_function_name = None
for i in range(len(inspect.stack())):
(frame, filename, line_number,
function_name, lines, index) = inspect.stack()[i]
#print(frame, filename, line_number, function_name, lines, index)
# Use stack to get easier function name than parsing the code itself
if i > 0:
_, _, _, prev_function_name, _, _ = inspect.stack()[i - 1]
else:
prev_function_name = function_name
script_name = filename.split(os.sep)[-1]
lib_location = os.path.realpath(__file__)
lib_name = lib_location.split(os.sep)[-1]
# cover .py and .pyc
if script_name != lib_name and script_name != lib_name[:-1]:
name = script_name + "_" + prev_function_name
#print(frame, filename, line_number, function_name, lines, index)
return name
raise ValueError("Issue in generic name getter")
# Many of these from Ishaan G.
def get_generic_name():
# may need to make this a search for the first non-kdllib reference
# make generic name from highest calling context
prev_function_name = None
for i in range(len(inspect.stack())):
(frame, filename, line_number,
function_name, lines, index) = inspect.stack()[i]
#print(frame, filename, line_number, function_name, lines, index)
# Use stack to get easier function name than parsing the code itself
if i > 0:
_, _, _, prev_function_name, _, _ = inspect.stack()[i - 1]
else:
prev_function_name = function_name
script_name = filename.split(os.sep)[-1]
lib_location = os.path.realpath(__file__)
lib_name = lib_location.split(os.sep)[-1]
# cover .py and .pyc
if script_name != lib_name and script_name != lib_name[:-1]:
name = script_name + "_" + prev_function_name
#print(frame, filename, line_number, function_name, lines, index)
return name
raise ValueError("Issue in generic name getter")
# Many of these from Ishaan G.
def get_generic_name():
# may need to make this a search for the first non-kdllib reference
# make generic name from highest calling context
prev_function_name = None
for i in range(len(inspect.stack())):
(frame, filename, line_number,
function_name, lines, index) = inspect.stack()[i]
#print(frame, filename, line_number, function_name, lines, index)
# Use stack to get easier function name than parsing the code itself
if i > 0:
_, _, _, prev_function_name, _, _ = inspect.stack()[i - 1]
else:
prev_function_name = function_name
script_name = filename.split(os.sep)[-1]
lib_location = os.path.realpath(__file__)
lib_name = lib_location.split(os.sep)[-1]
# cover .py and .pyc
if script_name != lib_name and script_name != lib_name[:-1]:
name = script_name + "_" + prev_function_name
#print(frame, filename, line_number, function_name, lines, index)
return name
raise ValueError("Issue in generic name getter")
# Many of these from Ishaan G.
def get_generic_name():
# may need to make this a search for the first non-kdllib reference
# make generic name from highest calling context
prev_function_name = None
for i in range(len(inspect.stack())):
(frame, filename, line_number,
function_name, lines, index) = inspect.stack()[i]
#print(frame, filename, line_number, function_name, lines, index)
# Use stack to get easier function name than parsing the code itself
if i > 0:
_, _, _, prev_function_name, _, _ = inspect.stack()[i - 1]
else:
prev_function_name = function_name
script_name = filename.split(os.sep)[-1]
lib_location = os.path.realpath(__file__)
lib_name = lib_location.split(os.sep)[-1]
# cover .py and .pyc
if script_name != lib_name and script_name != lib_name[:-1]:
name = script_name + "_" + prev_function_name
#print(frame, filename, line_number, function_name, lines, index)
return name
raise ValueError("Issue in generic name getter")
# Many of these from Ishaan G.
def get_generic_name():
# may need to make this a search for the first non-kdllib reference
# make generic name from highest calling context
prev_function_name = None
for i in range(len(inspect.stack())):
(frame, filename, line_number,
function_name, lines, index) = inspect.stack()[i]
#print(frame, filename, line_number, function_name, lines, index)
# Use stack to get easier function name than parsing the code itself
if i > 0:
_, _, _, prev_function_name, _, _ = inspect.stack()[i - 1]
else:
prev_function_name = function_name
script_name = filename.split(os.sep)[-1]
lib_location = os.path.realpath(__file__)
lib_name = lib_location.split(os.sep)[-1]
# cover .py and .pyc
if script_name != lib_name and script_name != lib_name[:-1]:
name = script_name + "_" + prev_function_name
#print(frame, filename, line_number, function_name, lines, index)
return name
raise ValueError("Issue in generic name getter")
# Many of these from Ishaan G.
def get_generic_name():
# may need to make this a search for the first non-kdllib reference
# make generic name from highest calling context
prev_function_name = None
for i in range(len(inspect.stack())):
(frame, filename, line_number,
function_name, lines, index) = inspect.stack()[i]
#print(frame, filename, line_number, function_name, lines, index)
# Use stack to get easier function name than parsing the code itself
if i > 0:
_, _, _, prev_function_name, _, _ = inspect.stack()[i - 1]
else:
prev_function_name = function_name
script_name = filename.split(os.sep)[-1]
lib_location = os.path.realpath(__file__)
lib_name = lib_location.split(os.sep)[-1]
# cover .py and .pyc
if script_name != lib_name and script_name != lib_name[:-1]:
name = script_name + "_" + prev_function_name
#print(frame, filename, line_number, function_name, lines, index)
return name
raise ValueError("Issue in generic name getter")
# Many of these from Ishaan G.
def get_generic_name():
# may need to make this a search for the first non-kdllib reference
# make generic name from highest calling context
prev_function_name = None
for i in range(len(inspect.stack())):
(frame, filename, line_number,
function_name, lines, index) = inspect.stack()[i]
#print(frame, filename, line_number, function_name, lines, index)
# Use stack to get easier function name than parsing the code itself
if i > 0:
_, _, _, prev_function_name, _, _ = inspect.stack()[i - 1]
else:
prev_function_name = function_name
script_name = filename.split(os.sep)[-1]
lib_location = os.path.realpath(__file__)
lib_name = lib_location.split(os.sep)[-1]
# cover .py and .pyc
if script_name != lib_name and script_name != lib_name[:-1]:
name = script_name + "_" + prev_function_name
#print(frame, filename, line_number, function_name, lines, index)
return name
raise ValueError("Issue in generic name getter")
# Many of these from Ishaan G.
def get_generic_name():
# may need to make this a search for the first non-kdllib reference
# make generic name from highest calling context
prev_function_name = None
for i in range(len(inspect.stack())):
(frame, filename, line_number,
function_name, lines, index) = inspect.stack()[i]
#print(frame, filename, line_number, function_name, lines, index)
# Use stack to get easier function name than parsing the code itself
if i > 0:
_, _, _, prev_function_name, _, _ = inspect.stack()[i - 1]
else:
prev_function_name = function_name
script_name = filename.split(os.sep)[-1]
lib_location = os.path.realpath(__file__)
lib_name = lib_location.split(os.sep)[-1]
# cover .py and .pyc
if script_name != lib_name and script_name != lib_name[:-1]:
name = script_name + "_" + prev_function_name
#print(frame, filename, line_number, function_name, lines, index)
return name
raise ValueError("Issue in generic name getter")
# Many of these from Ishaan G.
def get_generic_name():
# may need to make this a search for the first non-kdllib reference
# make generic name from highest calling context
prev_function_name = None
for i in range(len(inspect.stack())):
(frame, filename, line_number,
function_name, lines, index) = inspect.stack()[i]
#print(frame, filename, line_number, function_name, lines, index)
# Use stack to get easier function name than parsing the code itself
if i > 0:
_, _, _, prev_function_name, _, _ = inspect.stack()[i - 1]
else:
prev_function_name = function_name
script_name = filename.split(os.sep)[-1]
lib_location = os.path.realpath(__file__)
lib_name = lib_location.split(os.sep)[-1]
# cover .py and .pyc
if script_name != lib_name and script_name != lib_name[:-1]:
name = script_name + "_" + prev_function_name
#print(frame, filename, line_number, function_name, lines, index)
return name
raise ValueError("Issue in generic name getter")
# Many of these from Ishaan G.
def get_generic_name():
# may need to make this a search for the first non-kdllib reference
# make generic name from highest calling context
prev_function_name = None
for i in range(len(inspect.stack())):
(frame, filename, line_number,
function_name, lines, index) = inspect.stack()[i]
#print(frame, filename, line_number, function_name, lines, index)
# Use stack to get easier function name than parsing the code itself
if i > 0:
_, _, _, prev_function_name, _, _ = inspect.stack()[i - 1]
else:
prev_function_name = function_name
script_name = filename.split(os.sep)[-1]
lib_location = os.path.realpath(__file__)
lib_name = lib_location.split(os.sep)[-1]
# cover .py and .pyc
if script_name != lib_name and script_name != lib_name[:-1]:
name = script_name + "_" + prev_function_name
#print(frame, filename, line_number, function_name, lines, index)
return name
raise ValueError("Issue in generic name getter")
# Many of these from Ishaan G.
def get_generic_name():
# may need to make this a search for the first non-kdllib reference
# make generic name from highest calling context
prev_function_name = None
for i in range(len(inspect.stack())):
(frame, filename, line_number,
function_name, lines, index) = inspect.stack()[i]
#print(frame, filename, line_number, function_name, lines, index)
# Use stack to get easier function name than parsing the code itself
if i > 0:
_, _, _, prev_function_name, _, _ = inspect.stack()[i - 1]
else:
prev_function_name = function_name
script_name = filename.split(os.sep)[-1]
lib_location = os.path.realpath(__file__)
lib_name = lib_location.split(os.sep)[-1]
# cover .py and .pyc
if script_name != lib_name and script_name != lib_name[:-1]:
name = script_name + "_" + prev_function_name
#print(frame, filename, line_number, function_name, lines, index)
return name
raise ValueError("Issue in generic name getter")
# Many of these from Ishaan G.
def default(self, obj):
if isinstance(obj, np.ndarray) and obj.ndim == 1:
return obj.tolist()
elif isinstance(obj, np.generic):
return obj.item()
return json.JSONEncoder.default(self, obj)
def test_oddfeatures_3(self):
# Tests some generic features
atest = array([10], mask=True)
btest = array([20])
idx = atest.mask
atest[idx] = btest[idx]
assert_equal(atest, [20])
def test_tolist_specialcase(self):
# Test mvoid.tolist: make sure we return a standard Python object
a = array([(0, 1), (2, 3)], dtype=[('a', int), ('b', int)])
# w/o mask: each entry is a np.void whose elements are standard Python
for entry in a:
for item in entry.tolist():
assert_(not isinstance(item, np.generic))
# w/ mask: each entry is a ma.void whose elements should be
# standard Python
a.mask[0] = (0, 1)
for entry in a:
for item in entry.tolist():
assert_(not isinstance(item, np.generic))
def test_masked_where_oddities(self):
# Tests some generic features.
atest = ones((10, 10, 10), dtype=float)
btest = zeros(atest.shape, MaskType)
ctest = masked_where(btest, atest)
assert_equal(atest, ctest)
def _call(self, *args, **kwargs):
axis = kwargs['axis'] if 'axis' in kwargs else None
if len(args) == 0:
raise Exception('number of arguments must be more than 0')
if builtins.any(
not isinstance(_, (core.ndarray, numpy.ndarray, numpy.generic))
for _ in args):
raise TypeError('Invalid argument type for \'{}\': ({})'.format(
self.name,
', '.join(repr(type(_)) for _ in args)))
def is_cupy_data(a):
return isinstance(a, (core.ndarray, numpy.generic))
if builtins.all(is_cupy_data(_) for _ in args):
types = [_.dtype for _ in args]
key = tuple(types)
if key not in self._memo:
if self.input_num is not None:
nin = self.input_num
else:
nin = len(args)
f = _get_fusion(self.func, nin, self.reduce,
self.post_map, self.identity, types, self.name)
self._memo[key] = f
f = self._memo[key]
if self.reduce is None:
return f(*args)
else:
return f(*args, axis=axis)
else:
if builtins.any(type(_) is core.ndarray for _ in args):
types = '.'.join(repr(type(_)) for _ in args)
message = "Can't fuse \n %s(%s)" % (self.name, types)
warnings.warn(message)
if self.reduce is None:
return self.func(*args)
elif axis is None:
return self.post_map(self.reduce(self.func(*args)))
else:
return self.post_map(self.reduce(self.func(*args), axis=axis))
def tensor_to_protobuf(tensor):
pb_tensor = ops_pb.Tensor()
pb_tensor.info.dtype = dtype_to_protobuf(tensor.dtype)
pb_tensor.info.shape.extend(tensor.shape)
if isinstance(tensor, (np.ndarray, np.generic)):
pb_tensor.data = tensor.tobytes()
else:
raise ValueError("Unknown tensor value of {}".format(tensor))
return pb_tensor
def is_scalar_type(value):
return value is None or \
isinstance(value, (str, six.text_type, float, bool, Axis,
AxesMap, dict, slice, np.generic) +
six.integer_types)
def assign_scalar(message, value):
"""
Adds the appropriate scalar type of value to the protobuf message
"""
if value is None:
message.null_val = True
elif isinstance(value, np.generic):
assign_scalar(message, np.asscalar(value))
elif isinstance(value, (str, six.text_type)):
message.string_val = value
elif isinstance(value, np.dtype):
message.dtype_val = dtype_to_protobuf(value)
elif isinstance(value, float):
message.double_val = value
elif isinstance(value, bool):
message.bool_val = value
elif isinstance(value, six.integer_types):
message.int_val = value
elif isinstance(value, slice):
slice_val = ops_pb.Slice()
if value.start is not None:
slice_val.start.value = value.start
if value.step is not None:
slice_val.step.value = value.step
if value.stop is not None:
slice_val.stop.value = value.stop
message.slice_val.CopyFrom(slice_val)
elif isinstance(value, dict):
for key in value:
assign_scalar(message.map_val.map[key], value[key])
# This encodes an empty dict for deserialization
assign_scalar(message.map_val.map['_ngraph_map_sentinel_'], '')
elif isinstance(value, Axis):
message.axis.CopyFrom(axis_to_protobuf(value))
elif isinstance(value, AxesMap):
message.axes_map.CopyFrom(axes_map_to_protobuf(value))
else:
raise unhandled_scalar_value(value)
def protobuf_to_op(pb_op):
"""
This will convert a protobuf Op object into its corresponding Python object. But this cannot
setup links to other ops (such as args, control_deps) since those ops may not
exist yet.
We have to wait until all ops are created before connecting them back up together in a second
pass, so args, etc will be uninitialized.
"""
cls = get_ngraph_op_cls(pb_op.op_type)
# Skip the class constructor but we'll use the generic op constructor because it sets a lot of
# helpful defaults
py_op = cls.__new__(cls)
op_graph.Op.__init__(py_op)
py_op.name = str(pb_op.name)
if 'valfun_value' in pb_op.attrs:
valfun_value = pb_to_tensor(pb_op.attrs['valfun_value'].tensor)
py_op.valfun = lambda x: valfun_value
# op.uuid
py_op.uuid = uuid.UUID(bytes=pb_op.uuid.uuid)
# op.metadata and remaining keys
ignored_keys = {'valfun_value', 'dtype', 'metadata'}
remaining_keys = set(pb_op.attrs.keys()).difference(ignored_keys)
for key in remaining_keys:
if key == '_ngraph_ser_handle':
py_op._ngraph_ser_handle = True
if key.startswith('_ngraph_metadata_'):
value = pb_op.attrs[key]
py_op.metadata[key[17:]] = protobuf_attr_to_python(value)
elif not key.startswith('_is_') and key not in EXCEPTION_ATTRIBUTES and \
key.startswith('_'):
continue
else:
value = pb_op.attrs[key]
setattr(py_op, key, protobuf_attr_to_python(value))
return py_op
def test_similarity():
UserDataRow = Row(
"normalized_channel", "geo_city", "subsession_length", "os", "locale",
"active_addons", "bookmark_count", "tab_open_count", "total_uri", "unique_tlds"
)
test_user_1 = UserDataRow("release", "Boston", 10, "Windows", "en-US", [], 1, 2, 3, 4)
test_user_2 = UserDataRow("release", "notsoB", 10, "swodniW", "SU-ne", [], 1, 2, 3, 4)
test_user_3 = UserDataRow("release", "Boston", 0, "Windows", "en-US", [], 0, 0, 0, 0)
test_user_4 = UserDataRow("release", "notsoB", 0, "swodniW", "SU-ne", [], 0, 0, 0, 0)
# The following user contains a None value for "total_uri" and geo_city
# (categorical feature). The latter should never be possible, but let's be cautious.
test_user_5 = UserDataRow("release", None, 10, "swodniW", "SU-ne", [], 1, None, 3, 4)
# Identical users should be very close (0 distance) and the result must not
# be a Numpy number.
similarity_result = taar_similarity.similarity_function(test_user_1, test_user_1)
assert not isinstance(similarity_result, np.generic)
assert np.isclose(similarity_result, 0.0)
# Users with completely different categorical features but identical
# continuous features should be slightly different.
assert np.isclose(taar_similarity.similarity_function(test_user_1, test_user_2), 0.001)
# Users with completely different continuous features but identical
# categorical features should be very close.
assert np.isclose(taar_similarity.similarity_function(test_user_1, test_user_3), 0.0)
# Completely different users should be far away.
assert taar_similarity.similarity_function(test_user_1, test_user_4) >= 1.0
# Partial user information should not break the similarity function.
assert taar_similarity.similarity_function(test_user_1, test_user_5)
def set_theta(self, theta):
"""
Function sets theta. Can be called from constructor or outside.
"""
if isinstance(theta, (np.ndarray, np.generic)):
self.theta = theta
elif isinstance(theta, list):
self.theta = np.array(theta)
else:
self.theta = None
self.history = self.set_list(
self.history, 0, (np.copy(self.theta), 0, None))
self.step_no = 0
def filter_invalid_json_values(self, dict):
for k, v in six.iteritems(dict):
if isinstance(v, (np.ndarray, np.generic)):
dict[k] = v.tolist()
if math.isnan(v) or math.isinf(v):
dict[k] = -1
def invalid_json_values(obj):
if isinstance(obj, np.generic):
return obj.item()
if isinstance(obj, np.ndarray):
return obj.tolist()
if isinstance(obj, bytes):
return obj.decode('cp437')
if isinstance(map, type) and isinstance(obj, map):
# python 3 map
return list(obj)
raise TypeError('Invalid data type passed to json encoder: ' + type(obj).__name__)
def contains(self, x):
if isinstance(x, int):
as_int = x
elif isinstance(x, (np.generic, np.ndarray)) and (x.dtype.kind in np.typecodes['AllInteger'] and x.shape == ()):
as_int = int(x)
else:
return False
return as_int >= 0 and as_int < self.n
def capture_frame(self, frame):
if not isinstance(frame, (np.ndarray, np.generic)):
raise error.InvalidFrame('Wrong type {} for {} (must be np.ndarray or np.generic)'.format(type(frame), frame))
if frame.shape != self.frame_shape:
raise error.InvalidFrame("Your frame has shape {}, but the VideoRecorder is configured for shape {}.".format(frame.shape, self.frame_shape))
if frame.dtype != np.uint8:
raise error.InvalidFrame("Your frame has data type {}, but we require uint8 (i.e. RGB values from 0-255).".format(frame.dtype))
if distutils.version.LooseVersion(np.__version__) >= distutils.version.LooseVersion('1.9.0'):
self.proc.stdin.write(frame.tobytes())
else:
self.proc.stdin.write(frame.tostring())
def test_oddfeatures_3(self):
# Tests some generic features
atest = array([10], mask=True)
btest = array([20])
idx = atest.mask
atest[idx] = btest[idx]
assert_equal(atest, [20])
def test_tolist_specialcase(self):
# Test mvoid.tolist: make sure we return a standard Python object
a = array([(0, 1), (2, 3)], dtype=[('a', int), ('b', int)])
# w/o mask: each entry is a np.void whose elements are standard Python
for entry in a:
for item in entry.tolist():
assert_(not isinstance(item, np.generic))
# w/ mask: each entry is a ma.void whose elements should be
# standard Python
a.mask[0] = (0, 1)
for entry in a:
for item in entry.tolist():
assert_(not isinstance(item, np.generic))
def test_masked_where_oddities(self):
# Tests some generic features.
atest = ones((10, 10, 10), dtype=float)
btest = zeros(atest.shape, MaskType)
ctest = masked_where(btest, atest)
assert_equal(atest, ctest)
def feature_names(self, names):
"Stores the text labels for features"
if len(names) != self.num_features:
raise ValueError("Number of names do not match the number of features!")
if not isinstance(names, (Sequence, np.ndarray, np.generic)):
raise ValueError("Input is not a sequence. Ensure names are in the same order and length as features.")
self.__feature_names = np.array(names)
def is_np_scalar(x):
"""
Check np types like np.int64
"""
return isinstance(x, np.generic)
def contains(self, x):
if not isinstance(x, (tuple, list, np.generic, np.ndarray)):
return False
return np.shape(x) == self.shape and np.sum(x) == 1 and np.max(x) == 1
def contains(self, x):
if isinstance(x, int):
as_int = x
elif isinstance(x, (np.generic, np.ndarray)) and (x.dtype.kind in np.typecodes['AllInteger'] and x.shape == ()):
as_int = int(x)
else:
return False
return as_int >= 0 and as_int < self.n
def __setitem__(self, in_slice, value):
"""Set ndarray value"""
if (not isinstance(in_slice, slice) or
in_slice.start is not None
or in_slice.stop is not None):
raise ValueError('Array only support set from numpy array')
if isinstance(value, NDArray):
if value.handle is not self.handle:
value.copyto(self)
elif isinstance(value, (np.ndarray, np.generic)):
self._sync_copyfrom(value)
else:
raise TypeError('type %s not supported' % str(type(value)))
def _validate_date_like_dtype(dtype):
try:
typ = np.datetime_data(dtype)[0]
except ValueError as e:
raise TypeError('%s' % e)
if typ != 'generic' and typ != 'ns':
raise ValueError('%r is too specific of a frequency, try passing %r' %
(dtype.name, dtype.type.__name__))
def _get_dtype_from_object(dtype):
"""Get a numpy dtype.type-style object. This handles the datetime64[ns]
and datetime64[ns, TZ] compat
Notes
-----
If nothing can be found, returns ``object``.
"""
# type object from a dtype
if isinstance(dtype, type) and issubclass(dtype, np.generic):
return dtype
elif is_categorical(dtype):
return CategoricalDtype().type
elif is_datetimetz(dtype):
return DatetimeTZDtype(dtype).type
elif isinstance(dtype, np.dtype): # dtype object
try:
_validate_date_like_dtype(dtype)
except TypeError:
# should still pass if we don't have a datelike
pass
return dtype.type
elif isinstance(dtype, compat.string_types):
if dtype == 'datetime' or dtype == 'timedelta':
dtype += '64'
try:
return _get_dtype_from_object(getattr(np, dtype))
except (AttributeError, TypeError):
# handles cases like _get_dtype(int)
# i.e., python objects that are valid dtypes (unlike user-defined
# types, in general)
# TypeError handles the float16 typecode of 'e'
# further handle internal types
pass
return _get_dtype_from_object(np.dtype(dtype))
def test_oddfeatures_3(self):
# Tests some generic features
atest = array([10], mask=True)
btest = array([20])
idx = atest.mask
atest[idx] = btest[idx]
assert_equal(atest, [20])
def test_tolist_specialcase(self):
# Test mvoid.tolist: make sure we return a standard Python object
a = array([(0, 1), (2, 3)], dtype=[('a', int), ('b', int)])
# w/o mask: each entry is a np.void whose elements are standard Python
for entry in a:
for item in entry.tolist():
assert_(not isinstance(item, np.generic))
# w/ mask: each entry is a ma.void whose elements should be
# standard Python
a.mask[0] = (0, 1)
for entry in a:
for item in entry.tolist():
assert_(not isinstance(item, np.generic))
def to_numpy(var):
#if ia.is_numpy_array(var):
if isinstance(var, (np.ndarray, np.generic)):
return var
else:
return var.data.cpu().numpy()
def test_oddfeatures_3(self):
# Tests some generic features
atest = array([10], mask=True)
btest = array([20])
idx = atest.mask
atest[idx] = btest[idx]
assert_equal(atest, [20])
def test_tolist_specialcase(self):
# Test mvoid.tolist: make sure we return a standard Python object
a = array([(0, 1), (2, 3)], dtype=[('a', int), ('b', int)])
# w/o mask: each entry is a np.void whose elements are standard Python
for entry in a:
for item in entry.tolist():
assert_(not isinstance(item, np.generic))
# w/ mask: each entry is a ma.void whose elements should be
# standard Python
a.mask[0] = (0, 1)
for entry in a:
for item in entry.tolist():
assert_(not isinstance(item, np.generic))