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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:

def uninstall_python(python, runas=None):
    '''
    Uninstall a python implementation.

    python
        The version of python to uninstall. Should match one of the versions
        listed by :mod:`pyenv.versions <salt.modules.pyenv.versions>`

    CLI Example:

    .. code-block:: bash

        salt '*' pyenv.uninstall_python 2.0.0-p0
    '''
    python = re.sub(r'^python-', '', python)

    args = '--force {0}'.format(python)
    _pyenv_exec('uninstall', args, runas=runas)
    return True