perspective-python 4.4.1

A data visualization and analytics component, especially well-suited for large and/or streaming datasets.
Documentation 
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#  ┃ ██████ ██████ ██████       █      █      █      █      █ █▄  ▀███ █       ┃
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#  ┃ Copyright (c) 2017, the Perspective Authors.                              ┃
#  ┃ ╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌ ┃
#  ┃ This file is part of the Perspective library, distributed under the terms ┃
#  ┃ of the [Apache License 2.0](https://www.apache.org/licenses/LICENSE-2.0). ┃
#  ┗━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┛

import pytest


# test that loading perspective and calling a common constructor code path does
# not load various "expensive" modules. "Expensive" is in quotes because this is
# utter nonsense.
@pytest.mark.skip(reason="https://github.com/pyca/bcrypt/issues/694")
def test_lazy_modules():
    import sys

    cache = {}
    for key in list(sys.modules.keys()):
        if (
            key.startswith("perspective")
            or key.startswith("test")
            or key.startswith("pandas")
            or key.startswith("pyarrow")
            or key.startswith("tornado")
        ):
            cache[key] = sys.modules[key]
            del sys.modules[key]

    import perspective

    t1 = perspective.table("x\n1")
    t1.delete()

    assert "perspective" in sys.modules
    assert "pandas" not in sys.modules
    assert "pyarrow" not in sys.modules
    assert "tornado" not in sys.modules

    for k, v in cache.items():
        sys.modules[k] = v


def test_all():
    import perspective

    for key in perspective.__all__:
        assert hasattr(perspective, key)