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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 _split_section_and_key(key):
 """Return a tuple with config section and key."""

    parts = key.split('.')
    if len(parts) > 1:
        return 'renku "{0}"'.format(parts[0]), '.'.join(parts[1:])
    return 'renku', key