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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 cell_language(source):
 """Return cell language and language options, if any"""

    if source:
        line = source[0]
        if line.startswith('%%'):
            magic = line[2:]
            if ' ' in magic:
                lang, magic_args = magic.split(' ', 1)
            else:
                lang = magic
                magic_args = ''

            if lang in _JUPYTER_LANGUAGES:
                source.pop(0)
                return lang, magic_args

    return None, None