How to use the databand.parameters.FloatParameter function in databand

import logging

from datetime import date, timedelta
from typing import Dict

import pandas as pd

from databand import parameters
from dbnd import PipelineTask, output, parameter, task
from dbnd.testing.helpers_pytest import assert_run_task
from dbnd_test_scenarios.test_common.task.factories import TTask


class DummyTask(TTask):
    float_param = parameters.FloatParameter()
    expected_param = parameters.FloatParameter()

    timedelta_param = parameters.TimeDeltaParameter()
    expected_timedelta_param = parameters.TimeDeltaParameter()

    def run(self):
        assert isinstance(self.float_param, float)
        assert isinstance(self.timedelta_param, timedelta)
        assert self.float_param == self.expected_param
        assert self.timedelta_param == self.expected_timedelta_param
        super(DummyTask, self).run()


class DummyWrapper(PipelineTask):
    defaults = {DummyTask.float_param: "0.1", DummyTask.timedelta_param: "4d"}
    output = output

def test_params_parse(self):
        class TParseTask(TTask):
            bool_param = parameter[bool]
            int_param = parameter[int]
            float_param = parameters.FloatParameter()
            date_param = parameter[date]
            timedelta_param = parameters.TimeDeltaParameter()

            def run(self):
                assert isinstance(self.float_param, float)
                super(TParseTask, self).run()

        target = TParseTask(
            bool_param="yes",
            int_param="666",
            float_param="123.456",
            date_param="2018-11-10",
            timedelta_param="44d",
        )
        assert_run_task(target)

tasks.DataSourceTask,
            tasks.PipelineTask,
            targets.Target,
            targets.DataTarget,
            dbnd._core.task_build.task_namespace.namespace,
            parameters.Parameter,
            parameters.DateHourParameter,
            parameters.DateMinuteParameter,
            parameters.DateSecondParameter,
            parameters.DateParameter,
            parameters.MonthParameter,
            parameters.YearParameter,
            parameters.DateIntervalParameter,
            parameters.TimeDeltaParameter,
            parameters.IntParameter,
            parameters.FloatParameter,
            parameters.BoolParameter,
        ]
        assert len(expected) > 0

import logging

from datetime import date, timedelta
from typing import Dict

import pandas as pd

from databand import parameters
from dbnd import PipelineTask, output, parameter, task
from dbnd.testing.helpers_pytest import assert_run_task
from dbnd_test_scenarios.test_common.task.factories import TTask


class DummyTask(TTask):
    float_param = parameters.FloatParameter()
    expected_param = parameters.FloatParameter()

    timedelta_param = parameters.TimeDeltaParameter()
    expected_timedelta_param = parameters.TimeDeltaParameter()

    def run(self):
        assert isinstance(self.float_param, float)
        assert isinstance(self.timedelta_param, timedelta)
        assert self.float_param == self.expected_param
        assert self.timedelta_param == self.expected_timedelta_param
        super(DummyTask, self).run()


class DummyWrapper(PipelineTask):
    defaults = {DummyTask.float_param: "0.1", DummyTask.timedelta_param: "4d"}
    output = output