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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 tkvrsn(item):
 """ Given an item such as the Toolkit or an entry point name, return the latest version string. http://naif.jpl.nasa.gov/pub/naif/toolkit_docs/C/cspice/tkvrsn_c.html :param item: Item for which a version string is desired. :type item: str :return: the latest version string. :rtype: str """

    item = stypes.stringToCharP(item)
    return stypes.toPythonString(libspice.tkvrsn_c(item))