def outdent_lines(lines):
    """
    Removes the outer indentation on the method's source code. The extra
    indentation comes from the fact that the method is defined within a
    class and therefore has an extra level of indentation around itself.
    """
    outer_ws_count = 0
    for ch in lines[0]:
        if not ch.isspace():
            break
        outer_ws_count += 1
    return [line[outer_ws_count:] for line in lines]

    Removes the outer indentation on the method's source code. The extra
    indentation comes from the fact that the method is defined within a
    class and therefore has an extra level of indentation around itself.
    
recipes/Python/362305_Making_self_implicit_in_objects/recipe-362305.py