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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 is_arabicstring(text):
 """ Checks for an Arabic standard Unicode block characters An arabic string can contain spaces, digits and pounctuation. but only arabic standard characters, not extended arabic @param text: input text @type text: unicode @return: True if all charaters are in Arabic block @rtype: Boolean """

    if re.search(u"([^\u0600-\u0652%s%s%s\s\d])" \
                         % (LAM_ALEF, LAM_ALEF_HAMZA_ABOVE, LAM_ALEF_MADDA_ABOVE), text):
        return False
    return True