ugh Celsius:
    assert <span style='background-color:#76ff76'>math</span><span style='background-color:#91fe91'>.isclose</span><span style='background-color:#b0ffb0'>(</span><span style='background-color:#b6ffb6'>t</span><span style='background-color:#b0ffb0'>, </span><span style='background-color:#5fff5f'>f_to_c</span><span style='background-color:#76ff76'>(</span><span style='background-color:#38ff38'>c_to_f</span><span style='background-color:#4bfe4b'>(</span><span style='background-color:#55fe55'>t</sp