INSTRUCTION stringlengths 1 46.3k | RESPONSE stringlengths 75 80.2k |
|---|---|
Zip data struct together and return a data struct with the same shape. | def zip_nested(arg0, *args, **kwargs):
"""Zip data struct together and return a data struct with the same shape."""
# Python 2 do not support kwargs only arguments
dict_only = kwargs.pop("dict_only", False)
assert not kwargs
# Could add support for more exotic data_struct, like OrderedDict
if isinstance(ar... |
Simulate proto inheritance.
By default, protobuf do not support direct inheritance, so this decorator
simulates inheritance to the class to which it is applied.
Example:
```
@as_proto_class(proto.MyProto)
class A(object):
def custom_method(self):
return self.proto_field * 10
p = proto.MyProt... | def as_proto_cls(proto_cls):
"""Simulate proto inheritance.
By default, protobuf do not support direct inheritance, so this decorator
simulates inheritance to the class to which it is applied.
Example:
```
@as_proto_class(proto.MyProto)
class A(object):
def custom_method(self):
return self.pr... |
Path to tensorflow_datasets directory. | def tfds_dir():
"""Path to tensorflow_datasets directory."""
return os.path.dirname(os.path.dirname(os.path.dirname(__file__))) |
Writes to path atomically, by writing to temp file and renaming it. | def atomic_write(path, mode):
"""Writes to path atomically, by writing to temp file and renaming it."""
tmp_path = "%s%s_%s" % (path, constants.INCOMPLETE_SUFFIX, uuid.uuid4().hex)
with tf.io.gfile.GFile(tmp_path, mode) as file_:
yield file_
tf.io.gfile.rename(tmp_path, path, overwrite=True) |
Given a hash constructor, returns checksum digest and size of file. | def read_checksum_digest(path, checksum_cls=hashlib.sha256):
"""Given a hash constructor, returns checksum digest and size of file."""
checksum = checksum_cls()
size = 0
with tf.io.gfile.GFile(path, "rb") as f:
while True:
block = f.read(io.DEFAULT_BUFFER_SIZE)
size += len(block)
if not bl... |
Reraise an exception with an additional message. | def reraise(additional_msg):
"""Reraise an exception with an additional message."""
exc_type, exc_value, exc_traceback = sys.exc_info()
msg = str(exc_value) + "\n" + additional_msg
six.reraise(exc_type, exc_type(msg), exc_traceback) |
Get attr that handles dots in attr name. | def rgetattr(obj, attr, *args):
"""Get attr that handles dots in attr name."""
def _getattr(obj, attr):
return getattr(obj, attr, *args)
return functools.reduce(_getattr, [obj] + attr.split(".")) |
Returns SplitGenerators. | def _split_generators(self, dl_manager):
"""Returns SplitGenerators."""
image_tar_file = os.path.join(dl_manager.manual_dir,
self.builder_config.file_name)
if not tf.io.gfile.exists(image_tar_file):
# The current celebahq generation code depends on a concrete version ... |
This function returns the examples in the raw (text) form. | def _generate_examples(self, source_file, target_file):
"""This function returns the examples in the raw (text) form."""
with tf.io.gfile.GFile(source_file) as f:
source_sentences = f.read().split("\n")
with tf.io.gfile.GFile(target_file) as f:
target_sentences = f.read().split("\n")
assert... |
This function returns the examples in the raw (text) form. | def _generate_examples(self, filepath):
"""This function returns the examples in the raw (text) form."""
rows_per_pair_id = collections.defaultdict(list)
with tf.io.gfile.GFile(filepath) as f:
reader = csv.DictReader(f, delimiter='\t', quoting=csv.QUOTE_NONE)
for row in reader:
rows_per... |
Yields examples. | def _generate_example(self, data_path, image_id):
"""Yields examples."""
image_filepath = os.path.join(
data_path, "VOCdevkit/VOC2007/JPEGImages", "{}.jpg".format(image_id))
annon_filepath = os.path.join(
data_path, "VOCdevkit/VOC2007/Annotations", "{}.xml".format(image_id))
def _get_ex... |
Update the encoding format. | def set_encoding_format(self, encoding_format):
"""Update the encoding format."""
supported = ENCODE_FN.keys()
if encoding_format not in supported:
raise ValueError('`encoding_format` must be one of %s.' % supported)
self._encoding_format = encoding_format |
Update the shape. | def set_shape(self, shape):
"""Update the shape."""
channels = shape[-1]
acceptable_channels = ACCEPTABLE_CHANNELS[self._encoding_format]
if channels not in acceptable_channels:
raise ValueError('Acceptable `channels` for %s: %s (was %s)' % (
self._encoding_format, acceptable_channels, c... |
Returns np_image encoded as jpeg or png. | def _encode_image(self, np_image):
"""Returns np_image encoded as jpeg or png."""
if np_image.dtype != np.uint8:
raise ValueError('Image should be uint8. Detected: %s.' % np_image.dtype)
utils.assert_shape_match(np_image.shape, self._shape)
return self._runner.run(ENCODE_FN[self._encoding_format],... |
Convert the given image into a dict convertible to tf example. | def encode_example(self, image_or_path_or_fobj):
"""Convert the given image into a dict convertible to tf example."""
if isinstance(image_or_path_or_fobj, np.ndarray):
encoded_image = self._encode_image(image_or_path_or_fobj)
elif isinstance(image_or_path_or_fobj, six.string_types):
with tf.io.g... |
Reconstruct the image from the tf example. | def decode_example(self, example):
"""Reconstruct the image from the tf example."""
img = tf.image.decode_image(
example, channels=self._shape[-1], dtype=tf.uint8)
img.set_shape(self._shape)
return img |
See base class for details. | def save_metadata(self, data_dir, feature_name=None):
"""See base class for details."""
filepath = _get_metadata_filepath(data_dir, feature_name)
with tf.io.gfile.GFile(filepath, 'w') as f:
json.dump({
'shape': [-1 if d is None else d for d in self._shape],
'encoding_format': self.... |
See base class for details. | def load_metadata(self, data_dir, feature_name=None):
"""See base class for details."""
# Restore names if defined
filepath = _get_metadata_filepath(data_dir, feature_name)
if tf.io.gfile.exists(filepath):
with tf.io.gfile.GFile(filepath, 'r') as f:
info_data = json.load(f)
self.set_... |
Create a moving image sequence from the given image a left padding values.
Args:
image: [in_h, in_w, n_channels] uint8 array
pad_lefts: [sequence_length, 2] int32 array of left padding values
total_padding: tensor of padding values, (pad_h, pad_w)
Returns:
[sequence_length, out_h, out_w, n_channel... | def _create_moving_sequence(image, pad_lefts, total_padding):
"""Create a moving image sequence from the given image a left padding values.
Args:
image: [in_h, in_w, n_channels] uint8 array
pad_lefts: [sequence_length, 2] int32 array of left padding values
total_padding: tensor of padding values, (pad_... |
Construct a linear trajectory from x0.
Args:
x0: N-D float tensor.
velocity: N-D float tensor
t: [sequence_length]-length float tensor
Returns:
x: [sequence_length, ndims] float tensor. | def _get_linear_trajectory(x0, velocity, t):
"""Construct a linear trajectory from x0.
Args:
x0: N-D float tensor.
velocity: N-D float tensor
t: [sequence_length]-length float tensor
Returns:
x: [sequence_length, ndims] float tensor.
"""
x0 = tf.convert_to_tensor(x0)
velocity = tf.convert_... |
Turn simple static images into sequences of the originals bouncing around.
Adapted from Srivastava et al.
http://www.cs.toronto.edu/~nitish/unsupervised_video/
Example usage:
```python
import tensorflow as tf
import tensorflow_datasets as tfds
from tensorflow_datasets.video import moving_sequence
tf.c... | def image_as_moving_sequence(
image, sequence_length=20, output_size=(64, 64), velocity=0.1,
start_position=None):
"""Turn simple static images into sequences of the originals bouncing around.
Adapted from Srivastava et al.
http://www.cs.toronto.edu/~nitish/unsupervised_video/
Example usage:
```pyth... |
Returns splits. | def _split_generators(self, dl_manager):
"""Returns splits."""
dl_urls = {
split: _BASE_DOWNLOAD_PATH + "%s.tfrecord" % split for split in _SPLITS
}
dl_urls["instrument_labels"] = (_BASE_DOWNLOAD_PATH +
"instrument_labels.txt")
dl_paths = dl_manager.downlo... |
Return the tuple (major, minor, patch) version extracted from the str. | def _str_to_version(version_str, allow_wildcard=False):
"""Return the tuple (major, minor, patch) version extracted from the str."""
reg = _VERSION_WILDCARD_REG if allow_wildcard else _VERSION_RESOLVED_REG
res = reg.match(version_str)
if not res:
msg = "Invalid version '{}'. Format should be x.y.z".format(v... |
Returns True if other_version matches.
Args:
other_version: string, of the form "x[.y[.x]]" where {x,y,z} can be a
number or a wildcard. | def match(self, other_version):
"""Returns True if other_version matches.
Args:
other_version: string, of the form "x[.y[.x]]" where {x,y,z} can be a
number or a wildcard.
"""
major, minor, patch = _str_to_version(other_version, allow_wildcard=True)
return (major in [self.major, "*"] ... |
Returns labels for validation.
Args:
val_path: path to TAR file containing validation images. It is used to
retrieve the name of pictures and associate them to labels.
Returns:
dict, mapping from image name (str) to label (str). | def _get_validation_labels(val_path):
"""Returns labels for validation.
Args:
val_path: path to TAR file containing validation images. It is used to
retrieve the name of pictures and associate them to labels.
Returns:
dict, mapping from image name (str) to label (str).
"""
labels... |
Yields examples. | def _generate_examples(self, archive, validation_labels=None):
"""Yields examples."""
if validation_labels: # Validation split
for example in self._generate_examples_validation(archive,
validation_labels):
yield example
# Training split.... |
Returns a temporary filename based on filename. | def get_incomplete_path(filename):
"""Returns a temporary filename based on filename."""
random_suffix = "".join(
random.choice(string.ascii_uppercase + string.digits) for _ in range(6))
return filename + ".incomplete" + random_suffix |
Whether any of the filenames exist. | def do_files_exist(filenames):
"""Whether any of the filenames exist."""
preexisting = [tf.io.gfile.exists(f) for f in filenames]
return any(preexisting) |
Create temporary files for filenames and rename on exit. | def _incomplete_files(filenames):
"""Create temporary files for filenames and rename on exit."""
tmp_files = [get_incomplete_path(f) for f in filenames]
try:
yield tmp_files
for tmp, output in zip(tmp_files, filenames):
tf.io.gfile.rename(tmp, output)
finally:
for tmp in tmp_files:
if tf... |
Create temporary dir for dirname and rename on exit. | def incomplete_dir(dirname):
"""Create temporary dir for dirname and rename on exit."""
tmp_dir = get_incomplete_path(dirname)
tf.io.gfile.makedirs(tmp_dir)
try:
yield tmp_dir
tf.io.gfile.rename(tmp_dir, dirname)
finally:
if tf.io.gfile.exists(tmp_dir):
tf.io.gfile.rmtree(tmp_dir) |
Shuffle a single record file in memory. | def _shuffle_tfrecord(path, random_gen):
"""Shuffle a single record file in memory."""
# Read all records
record_iter = tf.compat.v1.io.tf_record_iterator(path)
all_records = [
r for r in utils.tqdm(
record_iter, desc="Reading...", unit=" examples", leave=False)
]
# Shuffling in memory
ran... |
Writes generated str records to output_files in round-robin order. | def _write_tfrecords_from_generator(generator, output_files, shuffle=True):
"""Writes generated str records to output_files in round-robin order."""
if do_files_exist(output_files):
raise ValueError(
"Pre-processed files already exists: {}.".format(output_files))
with _incomplete_files(output_files) ... |
Write records from generator round-robin across writers. | def _round_robin_write(writers, generator):
"""Write records from generator round-robin across writers."""
for i, example in enumerate(utils.tqdm(
generator, unit=" examples", leave=False)):
writers[i % len(writers)].write(example) |
Single item to a tf.train.Feature. | def _item_to_tf_feature(item, key_name):
"""Single item to a tf.train.Feature."""
v = item
if isinstance(v, (list, tuple)) and not v:
raise ValueError(
"Feature {} received an empty list value, so is unable to infer the "
"feature type to record. To support empty value, the corresponding "
... |
Builds tf.train.Features from (string -> int/float/str list) dictionary. | def _dict_to_tf_features(example_dict):
"""Builds tf.train.Features from (string -> int/float/str list) dictionary."""
features = {k: _item_to_tf_feature(v, k) for k, v
in six.iteritems(example_dict)}
return tf.train.Features(feature=features) |
Wrapper around Tqdm which can be updated in threads.
Usage:
```
with utils.async_tqdm(...) as pbar:
# pbar can then be modified inside a thread
# pbar.update_total(3)
# pbar.update()
```
Args:
*args: args of tqdm
**kwargs: kwargs of tqdm
Yields:
pbar: Async pbar which can be shar... | def _async_tqdm(*args, **kwargs):
"""Wrapper around Tqdm which can be updated in threads.
Usage:
```
with utils.async_tqdm(...) as pbar:
# pbar can then be modified inside a thread
# pbar.update_total(3)
# pbar.update()
```
Args:
*args: args of tqdm
**kwargs: kwargs of tqdm
Yields:... |
Increment total pbar value. | def update_total(self, n=1):
"""Increment total pbar value."""
with self._lock:
self._pbar.total += n
self.refresh() |
Increment current value. | def update(self, n=1):
"""Increment current value."""
with self._lock:
self._pbar.update(n)
self.refresh() |
Generate examples as dicts. | def _build_pcollection(self, pipeline, folder, split):
"""Generate examples as dicts."""
beam = tfds.core.lazy_imports.apache_beam
split_type = self.builder_config.split_type
filename = os.path.join(folder, "{}.tar.gz".format(split_type))
def _extract_data(inputs):
"""Extracts files from th... |
Copy data read from src file obj to new file in dest_path. | def _copy(src_file, dest_path):
"""Copy data read from src file obj to new file in dest_path."""
tf.io.gfile.makedirs(os.path.dirname(dest_path))
with tf.io.gfile.GFile(dest_path, 'wb') as dest_file:
while True:
data = src_file.read(io.DEFAULT_BUFFER_SIZE)
if not data:
break
dest_fil... |
Iter over tar archive, yielding (path, object-like) tuples.
Args:
arch_f: File object of the archive to iterate.
gz: If True, open a gzip'ed archive.
stream: If True, open the archive in stream mode which allows for faster
processing and less temporary disk consumption, but random access to the
... | def iter_tar(arch_f, gz=False, stream=False):
"""Iter over tar archive, yielding (path, object-like) tuples.
Args:
arch_f: File object of the archive to iterate.
gz: If True, open a gzip'ed archive.
stream: If True, open the archive in stream mode which allows for faster
processing and less tempo... |
Add a progression bar for the current extraction. | def tqdm(self):
"""Add a progression bar for the current extraction."""
with utils.async_tqdm(
total=0, desc='Extraction completed...', unit=' file') as pbar_path:
self._pbar_path = pbar_path
yield |
Returns `promise.Promise` => to_path. | def extract(self, path, extract_method, to_path):
"""Returns `promise.Promise` => to_path."""
self._pbar_path.update_total(1)
if extract_method not in _EXTRACT_METHODS:
raise ValueError('Unknown extraction method "%s".' % extract_method)
future = self._executor.submit(self._sync_extract,
... |
Returns `to_path` once resource has been extracted there. | def _sync_extract(self, from_path, method, to_path):
"""Returns `to_path` once resource has been extracted there."""
to_path_tmp = '%s%s_%s' % (to_path, constants.INCOMPLETE_SUFFIX,
uuid.uuid4().hex)
try:
for path, handle in iter_archive(from_path, method):
_copy... |
Convert a `TensorInfo` object into a feature proto object. | def to_serialized_field(tensor_info):
"""Convert a `TensorInfo` object into a feature proto object."""
# Select the type
dtype = tensor_info.dtype
# TODO(b/119937875): TF Examples proto only support int64, float32 and string
# This create limitation like float64 downsampled to float32, bool converted
# to ... |
Convert the given value to Feature if necessary. | def to_feature(value):
"""Convert the given value to Feature if necessary."""
if isinstance(value, FeatureConnector):
return value
elif utils.is_dtype(value): # tf.int32, tf.string,...
return Tensor(shape=(), dtype=tf.as_dtype(value))
elif isinstance(value, dict):
return FeaturesDict(value)
else:... |
Decode the given feature from the tfexample_dict.
Args:
feature_k (str): Feature key in the tfexample_dict
feature (FeatureConnector): Connector object to use to decode the field
tfexample_dict (dict): Dict containing the data to decode.
Returns:
decoded_feature: The output of the feature.decode_e... | def decode_single_feature_from_dict(
feature_k,
feature,
tfexample_dict):
"""Decode the given feature from the tfexample_dict.
Args:
feature_k (str): Feature key in the tfexample_dict
feature (FeatureConnector): Connector object to use to decode the field
tfexample_dict (dict): Dict contain... |
Ensure the two list of keys matches. | def _assert_keys_match(keys1, keys2):
"""Ensure the two list of keys matches."""
if set(keys1) != set(keys2):
raise ValueError('{} {}'.format(list(keys1), list(keys2))) |
See base class for details. | def get_tensor_info(self):
"""See base class for details."""
return {
feature_key: feature.get_tensor_info()
for feature_key, feature in self._feature_dict.items()
} |
See base class for details. | def get_serialized_info(self):
"""See base class for details."""
# Flatten tf-example features dict
# Use NonMutableDict to ensure there is no collision between features keys
features_dict = utils.NonMutableDict()
for feature_key, feature in self._feature_dict.items():
serialized_info = featur... |
See base class for details. | def encode_example(self, example_dict):
"""See base class for details."""
# Flatten dict matching the tf-example features
# Use NonMutableDict to ensure there is no collision between features keys
tfexample_dict = utils.NonMutableDict()
# Iterate over example fields
for feature_key, (feature, e... |
See base class for details. | def decode_example(self, tfexample_dict):
"""See base class for details."""
tensor_dict = {}
# Iterate over the Tensor dict keys
for feature_key, feature in six.iteritems(self._feature_dict):
decoded_feature = decode_single_feature_from_dict(
feature_k=feature_key,
feature=feat... |
See base class for details. | def save_metadata(self, data_dir, feature_name=None):
"""See base class for details."""
# Recursively save all child features
for feature_key, feature in six.iteritems(self._feature_dict):
if feature_name:
feature_key = '-'.join((feature_name, feature_key))
feature.save_metadata(data_dir... |
See base class for details. | def encode_example(self, example_data):
"""See base class for details."""
np_dtype = np.dtype(self._dtype.as_numpy_dtype)
# Convert to numpy if possible
if not isinstance(example_data, np.ndarray):
example_data = np.array(example_data, dtype=np_dtype)
# Ensure the shape and dtype match
if ... |
See base class for details. | def decode_example(self, tfexample_data):
"""See base class for details."""
# TODO(epot): Support dynamic shape
if self.shape.count(None) < 2:
# Restore the shape if possible. TF Example flattened it.
shape = [-1 if i is None else i for i in self.shape]
tfexample_data = tf.reshape(tfexampl... |
Unpack the celeba config file.
The file starts with the number of lines, and a header.
Afterwards, there is a configuration for each file: one per line.
Args:
file_path: Path to the file with the configuration.
Returns:
keys: names of the attributes
values: map from the file name to... | def _process_celeba_config_file(self, file_path):
"""Unpack the celeba config file.
The file starts with the number of lines, and a header.
Afterwards, there is a configuration for each file: one per line.
Args:
file_path: Path to the file with the configuration.
Returns:
keys: names ... |
Yields examples. | def _generate_examples(self, file_id, extracted_dirs):
"""Yields examples."""
filedir = os.path.join(extracted_dirs["img_align_celeba"],
"img_align_celeba")
img_list_path = extracted_dirs["list_eval_partition"]
landmarks_path = extracted_dirs["landmarks_celeba"]
attr_path ... |
Generate QuickDraw bitmap examples.
Given a list of file paths with data for each class label, generate examples
in a random order.
Args:
file_paths: (dict of {str: str}) the paths to files containing the data,
indexed by label.
Yields:
The QuickDraw examples, as defined... | def _generate_examples(self, file_paths):
"""Generate QuickDraw bitmap examples.
Given a list of file paths with data for each class label, generate examples
in a random order.
Args:
file_paths: (dict of {str: str}) the paths to files containing the data,
indexed by label.
... |
Attempt to import tensorflow, and ensure its version is sufficient.
Raises:
ImportError: if either tensorflow is not importable or its version is
inadequate. | def ensure_tf_install(): # pylint: disable=g-statement-before-imports
"""Attempt to import tensorflow, and ensure its version is sufficient.
Raises:
ImportError: if either tensorflow is not importable or its version is
inadequate.
"""
try:
import tensorflow as tf
except ImportError:
# Print ... |
Patch TF to maintain compatibility across versions. | def _patch_tf(tf):
"""Patch TF to maintain compatibility across versions."""
global TF_PATCH
if TF_PATCH:
return
v_1_12 = distutils.version.LooseVersion("1.12.0")
v_1_13 = distutils.version.LooseVersion("1.13.0")
v_2 = distutils.version.LooseVersion("2.0.0")
tf_version = distutils.version.LooseVersio... |
Monkey patch tf 1.12 so tfds can use it. | def _patch_for_tf1_12(tf):
"""Monkey patch tf 1.12 so tfds can use it."""
tf.io.gfile = tf.gfile
tf.io.gfile.copy = tf.gfile.Copy
tf.io.gfile.exists = tf.gfile.Exists
tf.io.gfile.glob = tf.gfile.Glob
tf.io.gfile.isdir = tf.gfile.IsDirectory
tf.io.gfile.listdir = tf.gfile.ListDirectory
tf.io.gfile.makedi... |
Monkey patch tf 1.13 so tfds can use it. | def _patch_for_tf1_13(tf):
"""Monkey patch tf 1.13 so tfds can use it."""
if not hasattr(tf.io.gfile, "GFile"):
tf.io.gfile.GFile = tf.gfile.GFile
if not hasattr(tf, "nest"):
tf.nest = tf.contrib.framework.nest
if not hasattr(tf.compat, "v2"):
tf.compat.v2 = types.ModuleType("tf.compat.v2")
tf.c... |
Whether ds is a Dataset. Compatible across TF versions. | def is_dataset(ds):
"""Whether ds is a Dataset. Compatible across TF versions."""
import tensorflow as tf
from tensorflow_datasets.core.utils import py_utils
dataset_types = [tf.data.Dataset]
v1_ds = py_utils.rgetattr(tf, "compat.v1.data.Dataset", None)
v2_ds = py_utils.rgetattr(tf, "compat.v2.data.Dataset"... |
This function returns the examples in the raw (text) form. | def _generate_examples(self, data_file):
"""This function returns the examples in the raw (text) form."""
with tf.io.gfile.GFile(data_file) as f:
reader = csv.DictReader(f, delimiter='\t', quoting=csv.QUOTE_NONE)
for row in reader:
# Everything in the row except for 'talk_name' will be a tra... |
Generate mnli examples.
Args:
filepath: a string
Yields:
dictionaries containing "premise", "hypothesis" and "label" strings | def _generate_examples(self, filepath):
"""Generate mnli examples.
Args:
filepath: a string
Yields:
dictionaries containing "premise", "hypothesis" and "label" strings
"""
for idx, line in enumerate(tf.io.gfile.GFile(filepath, "rb")):
if idx == 0:
continue # skip header
... |
Returns SplitGenerators from the folder names. | def _split_generators(self, dl_manager):
"""Returns SplitGenerators from the folder names."""
# At data creation time, parse the folder to deduce number of splits,
# labels, image size,
# The splits correspond to the high level folders
split_names = list_folders(dl_manager.manual_dir)
# Extrac... |
Generate example for each image in the dict. | def _generate_examples(self, label_images):
"""Generate example for each image in the dict."""
for label, image_paths in label_images.items():
for image_path in image_paths:
yield {
"image": image_path,
"label": label,
} |
Create a new dataset from a template. | def create_dataset_file(root_dir, data):
"""Create a new dataset from a template."""
file_path = os.path.join(root_dir, '{dataset_type}', '{dataset_name}.py')
context = (
_HEADER + _DATASET_DEFAULT_IMPORTS + _CITATION
+ _DESCRIPTION + _DATASET_DEFAULTS
)
with gfile.GFile(file_path.format(**data),... |
Append the new dataset file to the __init__.py. | def add_the_init(root_dir, data):
"""Append the new dataset file to the __init__.py."""
init_file = os.path.join(root_dir, '{dataset_type}', '__init__.py')
context = (
'from tensorflow_datasets.{dataset_type}.{dataset_name} import '
'{dataset_cls} # {TODO} Sort alphabetically\n'
)
with gfile.GFil... |
Generate examples as dicts.
Args:
filepath: `str` path of the file to process.
Yields:
Generator yielding the next samples | def _generate_examples(self, filepath):
"""Generate examples as dicts.
Args:
filepath: `str` path of the file to process.
Yields:
Generator yielding the next samples
"""
with tf.io.gfile.GFile(filepath, "rb") as f:
data = tfds.core.lazy_imports.scipy.io.loadmat(f)
# Maybe sh... |
Returns SplitGenerators. | def _split_generators(self, dl_manager):
"""Returns SplitGenerators."""
path = dl_manager.manual_dir
train_path = os.path.join(path, _TRAIN_DIR)
val_path = os.path.join(path, _VALIDATION_DIR)
if not tf.io.gfile.exists(train_path) or not tf.io.gfile.exists(val_path):
msg = ("You must download ... |
Yields examples. | def _generate_examples(self, imgs_path, csv_path):
"""Yields examples."""
with tf.io.gfile.GFile(csv_path) as csv_f:
reader = csv.DictReader(csv_f)
# Get keys for each label from csv
label_keys = reader.fieldnames[5:]
data = []
for row in reader:
# Get image based on indica... |
Construct a list of BuilderConfigs.
Construct a list of 60 Imagenet2012CorruptedConfig objects, corresponding to
the 12 corruption types, with each type having 5 severities.
Returns:
A list of 60 Imagenet2012CorruptedConfig objects. | def _make_builder_configs():
"""Construct a list of BuilderConfigs.
Construct a list of 60 Imagenet2012CorruptedConfig objects, corresponding to
the 12 corruption types, with each type having 5 severities.
Returns:
A list of 60 Imagenet2012CorruptedConfig objects.
"""
config_list = []
for each_corru... |
Return the validation split of ImageNet2012.
Args:
dl_manager: download manager object.
Returns:
validation split. | def _split_generators(self, dl_manager):
"""Return the validation split of ImageNet2012.
Args:
dl_manager: download manager object.
Returns:
validation split.
"""
splits = super(Imagenet2012Corrupted, self)._split_generators(dl_manager)
validation = splits[1]
return [validation... |
Generate corrupted imagenet validation data.
Apply corruptions to the raw images according to self.corruption_type.
Args:
archive: an iterator for the raw dataset.
labels: a dictionary that maps the file names to imagenet labels.
Yields:
dictionary with the file name, an image file obje... | def _generate_examples_validation(self, archive, labels):
"""Generate corrupted imagenet validation data.
Apply corruptions to the raw images according to self.corruption_type.
Args:
archive: an iterator for the raw dataset.
labels: a dictionary that maps the file names to imagenet labels.
... |
Return corrupted images.
Args:
x: numpy array, uncorrupted image.
Returns:
numpy array, corrupted images. | def _get_corrupted_example(self, x):
"""Return corrupted images.
Args:
x: numpy array, uncorrupted image.
Returns:
numpy array, corrupted images.
"""
corruption_type = self.builder_config.corruption_type
severity = self.builder_config.severity
return {
'gaussian_noise'... |
Ensure the shape1 match the pattern given by shape2.
Ex:
assert_shape_match((64, 64, 3), (None, None, 3))
Args:
shape1 (tuple): Static shape
shape2 (tuple): Dynamic shape (can contain None) | def assert_shape_match(shape1, shape2):
"""Ensure the shape1 match the pattern given by shape2.
Ex:
assert_shape_match((64, 64, 3), (None, None, 3))
Args:
shape1 (tuple): Static shape
shape2 (tuple): Dynamic shape (can contain None)
"""
shape1 = tf.TensorShape(shape1)
shape2 = tf.TensorShape(s... |
tf.Session, hiding GPUs. | def raw_nogpu_session(graph=None):
"""tf.Session, hiding GPUs."""
config = tf.compat.v1.ConfigProto(device_count={'GPU': 0})
return tf.compat.v1.Session(config=config, graph=graph) |
Eager-compatible Graph().as_default() yielding the graph. | def maybe_with_graph(graph=None, create_if_none=True):
"""Eager-compatible Graph().as_default() yielding the graph."""
if tf.executing_eagerly():
yield None
else:
if graph is None and create_if_none:
graph = tf.Graph()
if graph is None:
yield None
else:
with graph.as_default():
... |
Execute the given TensorFlow function. | def run(self, fct, input_):
"""Execute the given TensorFlow function."""
# TF 2.0
if tf.executing_eagerly():
return fct(input_).numpy()
# TF 1.0
else:
# Should compile the function if this is the first time encountered
if not isinstance(input_, np.ndarray):
input_ = np.arra... |
Create a new graph for the given args. | def _build_graph_run(self, run_args):
"""Create a new graph for the given args."""
# Could try to use tfe.py_func(fct) but this would require knowing
# information about the signature of the function.
# Create a new graph:
with tf.Graph().as_default() as g:
# Create placeholder
input_ =... |
Create a unique signature for each fct/inputs. | def _build_signature(self, run_args):
"""Create a unique signature for each fct/inputs."""
return (id(run_args.fct), run_args.input.dtype, run_args.input.shape) |
Converts the given image into a dict convertible to tf example. | def encode_example(self, video_or_path_or_fobj):
"""Converts the given image into a dict convertible to tf example."""
if isinstance(video_or_path_or_fobj, six.string_types):
if not os.path.isfile(video_or_path_or_fobj):
_, video_temp_path = tempfile.mkstemp()
try:
tf.gfile.Copy(... |
Generate rock, paper or scissors images and labels given the directory path.
Args:
archive: object that iterates over the zip.
Yields:
The image path and its corresponding label. | def _generate_examples(self, archive):
"""Generate rock, paper or scissors images and labels given the directory path.
Args:
archive: object that iterates over the zip.
Yields:
The image path and its corresponding label.
"""
for fname, fobj in archive:
res = _NAME_RE.match(fname... |
Generate features and target given the directory path.
Args:
file_path: path where the csv file is stored
Yields:
The features and the target | def _generate_examples(self, file_path):
"""Generate features and target given the directory path.
Args:
file_path: path where the csv file is stored
Yields:
The features and the target
"""
with tf.io.gfile.GFile(file_path) as f:
raw_data = csv.DictReader(f)
for row in raw... |
Strip ID 0 and decrement ids by 1. | def pad_decr(ids):
"""Strip ID 0 and decrement ids by 1."""
if len(ids) < 1:
return list(ids)
if not any(ids):
return [] # all padding.
idx = -1
while not ids[idx]:
idx -= 1
if idx == -1:
ids = ids
else:
ids = ids[:idx + 1]
return [i - 1 for i in ids] |
Prepare reserved tokens and a regex for splitting them out of strings. | def _prepare_reserved_tokens(reserved_tokens):
"""Prepare reserved tokens and a regex for splitting them out of strings."""
reserved_tokens = [tf.compat.as_text(tok) for tok in reserved_tokens or []]
dups = _find_duplicates(reserved_tokens)
if dups:
raise ValueError("Duplicates found in tokens: %s" % dups)
... |
Constructs compiled regex to parse out reserved tokens. | def _make_reserved_tokens_re(reserved_tokens):
"""Constructs compiled regex to parse out reserved tokens."""
if not reserved_tokens:
return None
escaped_tokens = [_re_escape(rt) for rt in reserved_tokens]
pattern = "(%s)" % "|".join(escaped_tokens)
reserved_tokens_re = _re_compile(pattern)
return reserv... |
Writes lines to file prepended by header and metadata. | def write_lines_to_file(cls_name, filename, lines, metadata_dict):
"""Writes lines to file prepended by header and metadata."""
metadata_dict = metadata_dict or {}
header_line = "%s%s" % (_HEADER_PREFIX, cls_name)
metadata_line = "%s%s" % (_METADATA_PREFIX,
json.dumps(metadata_dict, ... |
Read lines from file, parsing out header and metadata. | def read_lines_from_file(cls_name, filename):
"""Read lines from file, parsing out header and metadata."""
with tf.io.gfile.GFile(filename, "rb") as f:
lines = [tf.compat.as_text(line)[:-1] for line in f]
header_line = "%s%s" % (_HEADER_PREFIX, cls_name)
if lines[0] != header_line:
raise ValueError("Fil... |
Splits a string into tokens. | def tokenize(self, s):
"""Splits a string into tokens."""
s = tf.compat.as_text(s)
if self.reserved_tokens:
# First split out the reserved tokens
substrs = self._reserved_tokens_re.split(s)
else:
substrs = [s]
toks = []
for substr in substrs:
if substr in self.reserved_... |
Convert a python slice [15:50] into a list[bool] mask of 100 elements. | def slice_to_percent_mask(slice_value):
"""Convert a python slice [15:50] into a list[bool] mask of 100 elements."""
if slice_value is None:
slice_value = slice(None)
# Select only the elements of the slice
selected = set(list(range(100))[slice_value])
# Create the binary mask
return [i in selected for ... |
Return the mapping shard_id=>num_examples, assuming round-robin. | def get_shard_id2num_examples(num_shards, total_num_examples):
"""Return the mapping shard_id=>num_examples, assuming round-robin."""
# TODO(b/130353071): This has the strong assumption that the shards have
# been written in a round-robin fashion. This assumption does not hold, for
# instance, with Beam generat... |
Return the list of offsets associated with each shards.
Args:
shard_id2num_examples: `list[int]`, mapping shard_id=>num_examples
Returns:
mask_offsets: `list[int]`, offset to skip for each of the shard | def compute_mask_offsets(shard_id2num_examples):
"""Return the list of offsets associated with each shards.
Args:
shard_id2num_examples: `list[int]`, mapping shard_id=>num_examples
Returns:
mask_offsets: `list[int]`, offset to skip for each of the shard
"""
total_num_examples = sum(shard_id2num_exam... |
Check that the two split dicts have the same names and num_shards. | def check_splits_equals(splits1, splits2):
"""Check that the two split dicts have the same names and num_shards."""
if set(splits1) ^ set(splits2): # Name intersection should be null
return False
for _, (split1, split2) in utils.zip_dict(splits1, splits2):
if split1.num_shards != split2.num_shards:
... |
Add the split info. | def add(self, split_info):
"""Add the split info."""
if split_info.name in self:
raise ValueError("Split {} already present".format(split_info.name))
# TODO(epot): Make sure this works with Named splits correctly.
super(SplitDict, self).__setitem__(split_info.name, split_info) |
Returns a new SplitDict initialized from the `repeated_split_infos`. | def from_proto(cls, repeated_split_infos):
"""Returns a new SplitDict initialized from the `repeated_split_infos`."""
split_dict = cls()
for split_info_proto in repeated_split_infos:
split_info = SplitInfo()
split_info.CopyFrom(split_info_proto)
split_dict.add(split_info)
return split_... |
Returns a list of SplitInfo protos that we have. | def to_proto(self):
"""Returns a list of SplitInfo protos that we have."""
# Return the proto.SplitInfo, sorted by name
return sorted((s.get_proto() for s in self.values()), key=lambda s: s.name) |
This function returns the examples in the raw (text) form. | def _generate_examples(self, filepath):
"""This function returns the examples in the raw (text) form."""
logging.info("generating examples from = %s", filepath)
with tf.io.gfile.GFile(filepath) as f:
squad = json.load(f)
for article in squad["data"]:
if "title" in article:
titl... |
This function returns the examples in the raw (text) form. | def _generate_examples(self, data_file):
"""This function returns the examples in the raw (text) form."""
target_language = self.builder_config.target_language
with tf.io.gfile.GFile(data_file) as f:
for i, line in enumerate(f):
line_parts = line.strip().split("\t")
if len(line_parts)... |
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