Create `/math/power` resource

[neumannrf]

As a user
I need to power each element in the list by an integer value
So that so that calculations can be automated.

Assumptions:

• There should be a main.py file with the following content.

@math_ns.route('/power/<int:integer>')
@math_ns.doc(params={'integer': 'Integer value.'}, description='Power list to an integer.')
class PowerList(Resource):
    def put(self, integer):
        return ms.power_list(my_list, integer)

• The main.py file should include an external file above the from src import basic_services as bs line.

from src import math_services as ms

• There should be a src/math_services.py file with the following content

def power_list(integer_list, integer_value):
    """
    Power every integer in the list to an integer value.

    Receives
    --------
    integer_list : list
        List of integers.

    integer_value : integer
        Integer value to which every element should be powered.

    Returns
    -------
    powered_list : list
        List of integers powered to input value.
    """

    powered_list = [x**integer_value for x in integer_list]
    integer_list.clear()
    integer_list.extend(powered_list)
    return integer_list

• There should be a test/math_test.py file with the following content.

from src import math_services as ms


def test_power_list():
    assert ms.power_list([], 1) == []
    assert ms.power_list([1], 0) == [1]
    assert ms.power_list([1], 1) == [1]
    assert ms.power_list([1], 2) == [1]
    assert ms.power_list([1], 3) == [1]
    assert ms.power_list([1, 2], 0) == [1, 1]
    assert ms.power_list([1, 2], 1) == [1, 2]
    assert ms.power_list([1, 2], 2) == [1, 4]
    assert ms.power_list([1, 2], 3) == [1, 8]
    assert ms.power_list([1, 2, 3], 0) == [1, 1, 1]
    assert ms.power_list([1, 2, 3], 1) == [1, 2, 3]
    assert ms.power_list([1, 2, 3], 2) == [1, 4, 9]
    assert ms.power_list([1, 2, 3], 3) == [1, 8, 27]

Acceptance criteria:

Given that the application stores a list of integers
When this resource is called
Then each number in the list is powered to an integer value.