code: def _read_amino_acids():
      
      this_dir = os.path.dirname(os.path.abspath(__file__))
      aa_file = os.path.join(this_dir, os.pardir, 'resources', 'amino_acids.tsv')
      amino_acids = {}
      amino_acids_reverse = {}
      with open(aa_file, 'rt') as fh:
          lines = fh.readlines()
      for lin in lines[1:]:
          terms = lin.strip().split('\t')
          key = terms[2]
          val = {'full_name': terms[0],
                 'short_name': terms[1],
                 'indra_name': terms[3]}
          amino_acids[key] = val
          for v in val.values():
              amino_acids_reverse[v] = key
      return amino_acids, amino_acids_reverse
docs: Read the amino acid information from a resource file.