Same as `get_tikz_code()`, but actually saves the code to a file.

    :param filepath: The file to which the TikZ output will be written.
    :type filepath: str

    :param encoding: Sets the text encoding of the output file, e.g. 'utf-8'.
                     For supported values: see ``codecs`` module.
    :returns: None

def save(filepath, *args, encoding=None, **kwargs):
    """Same as `get_tikz_code()`, but actually saves the code to a file.

    :param filepath: The file to which the TikZ output will be written.
    :type filepath: str

    :param encoding: Sets the text encoding of the output file, e.g. 'utf-8'.
                     For supported values: see ``codecs`` module.
    :returns: None
    """
    code = get_tikz_code(*args, filepath=filepath, **kwargs)
    file_handle = codecs.open(filepath, "w", encoding)
    try:
        file_handle.write(code)
    except UnicodeEncodeError:
        # We're probably using Python 2, so treat unicode explicitly
        file_handle.write(six.text_type(code).encode("utf-8"))
    file_handle.close()
    return