Solution
========

Unique Sample Solution
----------------------

.. code-block:: python

    class Multiplication(pyrope.Exercise):

        def problem(self):
            return pyrope.Problem(
                r'What is $6 \times 7$? <<answer>>',
                answer=pyrope.Natural()
            )

        def the_solution(self):
            return 42


Non-Unique Sample Solution
--------------------------

.. code-block:: python

    class Factors(pyrope.Exercise):

        def problem(self):

            return pyrope.Problem(
                'Give a prime factor of 42: <<factor>>',
                factor=pyrope.Natural()
            )

        def scores(self, factor):
            return factor in {2, 3, 7}

        def a_solution(self):
            return 7

Implicit Sample Solution
------------------------

.. code-block:: python

    import random

    class QuadraticEquation(pyrope.Exercise):

        def parameters(self):
            x = random.randint(1, 9)
            return dict(x=x, q=x**2)

        def problem(self, q):
            return pyrope.Problem(
                'Give a root of the quadratic equation $x^2-<<q:latex>>=0$: <<x_>>',
                x_=pyrope.Integer()
            )