psdi_data_conversion/compatibility.py

Created 2026-09-22 by Bryan Gillis.

Different versions of methods etc. to help with compatibility with different versions of Python. Official tools are used where possible, with fallback to implementations here if not

Classes

class DummySubtests (**kwargs)

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class DummySubtests:
    """Fallback for Pytest's `subtests` fixtrue, which just sets up a dummy context manager which will result
    in any subtest failing immediately failing the enclosing test"""

    def __init__(*args, **kwargs):
        return

    def test(self, *args, **kwargs) -> AbstractContextManager:
        return _dummy_context_manager()

Fallback for Pytest's subtests fixtrue, which just sets up a dummy context manager which will result in any subtest failing immediately failing the enclosing test

Methods

def test(self, *args, **kwargs) ‑> contextlib.AbstractContextManager

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def test(self, *args, **kwargs) -> AbstractContextManager:
    return _dummy_context_manager()

class batched (iterable, n)

Batch data into tuples of length n. The last batch may be shorter than n.

Loops over the input iterable and accumulates data into tuples up to size n. The input is consumed lazily, just enough to fill a batch. The result is yielded as soon as a batch is full or when the input iterable is exhausted.

>>> for batch in batched('ABCDEFG', 3):
...     print(batch)
...
('A', 'B', 'C')
('D', 'E', 'F')
('G',)