32 lines
740 B
Python
32 lines
740 B
Python
#!/usr/bin/env python
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# pylint: disable=W0212
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def where(self, test):
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"""
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Create a new :class:`.Table` with only those rows that pass a test.
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:param test:
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A function that takes a :class:`.Row` and returns :code:`True` if
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it should be included in the new :class:`.Table`.
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:type test:
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:class:`function`
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:returns:
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A new :class:`.Table`.
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"""
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rows = []
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if self._row_names is not None:
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row_names = []
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else:
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row_names = None
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for i, row in enumerate(self._rows):
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if test(row):
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rows.append(row)
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if row_names is not None:
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row_names.append(self._row_names[i])
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return self._fork(rows, row_names=row_names)
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