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GeezerVison is showing github.com — feast/sdk/python/feast/feature.py at master · feast-dev/feast Expand file tree/ Copy pathfeature.pyMore file actions 136 lines (116 loc) · 3.75 KB / Copy pathfeature.pyFile metadata and controls136 lines (116 loc) · 3.75 KB 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 # Copyright 2020 The Feast Authors # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # https://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. from typing import Dict, Optional from feast.protos.feast.core.Feature_pb2 import FeatureSpecV2 as FeatureSpecProto from feast.protos.feast.types.Value_pb2 import ValueType as ValueTypeProto from feast.value_type import ValueType class Feature: """ A Feature represents a class of serveable feature. Args: name: Name of the feature. dtype: The type of the feature, such as string or float. labels (optional): User-defined metadata in dictionary form. """ def __init__( self, name: str, dtype: ValueType, description: str = "", labels: Optional[Dict[str, str]] = None, ): """Creates a Feature object.""" self._name = name if not isinstance(dtype, ValueType): raise ValueError("dtype is not a valid ValueType") if dtype is ValueType.UNKNOWN: raise ValueError(f"dtype cannot be {dtype}") self._dtype = dtype self._description = description if labels is None: self._labels = dict() else: self._labels = labels def __eq__(self, other): if not isinstance(other, Feature): return False if self.name != other.name or self.dtype != other.dtype: return False return True def __lt__(self, other): return self.name < other.name def __repr__(self): return ( f"Feature(\n" f" name={self._name!r},\n" f" dtype={self._dtype!r},\n" f" description={self._description!r},\n" f" labels={self._labels!r}\n" f")" ) def __str__(self): # readable string of the reference return f"Feature<{self.name}: {self.dtype}>" @property def name(self): """ Gets the name of this feature. """ return self._name @property def dtype(self) -> ValueType: """ Gets the data type of this feature. """ return self._dtype @property def description(self) -> str: """ Gets the description of the feature """ return self._description @property def labels(self) -> Dict[str, str]: """ Gets the labels of this feature. """ return self._labels def to_proto(self) -> FeatureSpecProto: """ Converts Feature object to its Protocol Buffer representation. Returns: A FeatureSpecProto protobuf. """ value_type = ValueTypeProto.Enum.Value(self.dtype.name) return FeatureSpecProto( name=self.name, value_type=value_type, description=self.description, tags=self.labels, ) @classmethod def from_proto(cls, feature_proto: FeatureSpecProto): """ Args: feature_proto: FeatureSpecV2 protobuf object Returns: Feature object """ feature = cls( name=feature_proto.name, dtype=ValueType(feature_proto.value_type), description=feature_proto.description, labels=dict(feature_proto.tags), ) return feature |
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