MWE: Here is the list :
L=[[\'1\', \'1\', \'0\', \'0\', \'0\'],[\'1\', \'1\', \'1\', \'1\', \'0\'],[\'0\', \'0\', \'1\', \'1\', \'0\']] <
L = [['1', '1', '0', '0', '0'],['1', '1', '1', '1', '0'],['0', '0', '1', '1', '0']] D = [''.join(sub_list) for sub_list in L]