37 lines
977 B
Python
37 lines
977 B
Python
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#!/usr/bin/env python
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from agate.aggregations.base import Aggregation
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from agate.data_types import Boolean
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class Any(Aggregation):
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"""
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Check if any value in a column passes a test.
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:param column_name:
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The name of the column to check.
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:param test:
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Either a single value that all values in the column are compared against
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(for equality) or a function that takes a column value and returns
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`True` or `False`.
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"""
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def __init__(self, column_name, test):
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self._column_name = column_name
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if callable(test):
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self._test = test
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else:
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self._test = lambda d: d == test
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def get_aggregate_data_type(self, table):
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return Boolean()
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def validate(self, table):
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column = table.columns[self._column_name]
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def run(self, table):
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column = table.columns[self._column_name]
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data = column.values()
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return any(self._test(d) for d in data)
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