histogram.py

 def histogram(in_list):
     hist = [[0] * len(in_list) for _ in range(max(in_list))]
     for i in range(len(hist)):
         for j, val in enumerate(in_list):
             if val > i:
                 hist[i][j] = 1
     out_str = ''
     for subl in hist[::-1]:
         for val in subl:
             if val:
                 out_str += '|'
             else:
                 out_str += ' '
         out_str += '\n'
     print(out_str)