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from green_magic.data.backend.engine_specs import EngineTabularRetriever, EngineTabularIterator, EngineTabularMutator |
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from green_magic.data.backend.engine import DataEngine |
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import pandas as pd |
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__all__ = ['PDTabularRetriever', 'PDTabularIterator', 'PDTabularMutator'] |
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@EngineTabularRetriever.register_as_subclass('pd') |
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class PDTabularRetriever(EngineTabularRetriever): |
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"""The observation object is the same as the one your return from 'from_json_lines'""" |
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def column(self, identifier, data): |
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return data.observations[identifier] |
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def row(self, identifier, data): |
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return data.observations.loc(identifier) |
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def nb_columns(self, data): |
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return len(data.observations.columns) |
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def nb_rows(self, data): |
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return len(data.observations) |
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def get_numerical_attributes(self, data): |
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return data.observations._get_numeric_data().columns.values |
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@EngineTabularIterator.register_as_subclass('pd') |
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class PDTabularIterator(EngineTabularIterator): |
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"""The observation object is the same as the one your return from 'from_json_lines'""" |
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def columnnames(self, data): |
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return [_ for _ in data.observations.columns] |
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def iterrows(self, data): |
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return iter(data.observations.iterrows()) |
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def itercolumns(self, data): |
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return iter(data.observations[column] for column in data.observations.columns) |
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@EngineTabularMutator.register_as_subclass('pd') |
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class PDTabularMutator(EngineTabularMutator): |
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def add_column(self, datapoints, values, new_attribute, **kwargs): |
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datapoints.observations[new_attribute] = values |
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@DataEngine.dec() |
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def observations(file_path): |
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return pd.read_json(file_path, lines=True) |
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boromir674 /
so-magic
