I need help solving the def eight_queen function and the n-queen function if possible?

tusr/bin/python3 import unittest ?Classic, . recursive, implementation-of-N-Queen-solution, . from-,E Dijkstra-<.. archive a short introduction to the art programming ewd chapter def print_solution print-a solution chessboard-on console . example .given first-solution for .problem : math: t1 function prints-the-chessboard-configuration that follows: .qc .a-vector-of-column indices .whose first-element.is the-queen-position. .in.the.first.row .the second.element.is-the-queen-position in second w so on. type qc: list n len row range rowstring_ array- col coi if q col: string array else: print row-string-array. tusr import unittest recursive implementation-of-n-queen-solution from- dijkstra->