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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#  ┃ 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 psutil
import os
import perspective as psp

client = psp.Server().new_local_client()
Table = client.table


class TestDelete(object):
    # delete

    def test_table_delete(self):
        process = psutil.Process(os.getpid())
        data = [{"a": 1, "b": 2}, {"a": 3, "b": 4}]
        tbl = Table(data)
        tbl.delete()
        mem = process.memory_info().rss

        for x in range(10000):
            data = [{"a": 1, "b": 2}, {"a": 3, "b": 4}]
            tbl = Table(data)
            tbl.delete()

        mem2 = process.memory_info().rss

        # assert 1 < (max2 / max) < 1.01
        assert (mem2 - mem) < 2000000

    def test_table_delete_with_view(self, sentinel):
        data = [{"a": 1, "b": 2}, {"a": 3, "b": 4}]
        tbl = Table(data)

        process = psutil.Process(os.getpid())
        mem = process.memory_info().rss
        for x in range(10000):
            view = tbl.view()
            view.delete()

        tbl.delete()
        mem2 = process.memory_info().rss
        assert (mem2 - mem) < 2000000