code: def modifiedaminoacids(df):
      
  
      amino_acids = list(df['Amino acid'].values)
      aas = set(amino_acids)
      quants = {}
  
      for aa in aas:
          quants[aa] = amino_acids.count(aa)
          
      total_aas = len(amino_acids)
  
      return total_aas, quants
docs: Calculate the number of modified amino acids in supplied ``DataFrame``.
  
      Returns the total of all modifications and the total for each amino acid individually, as an ``int`` and a
      ``dict`` of ``int``, keyed by amino acid, respectively.
  
      :param df: Pandas ``DataFrame`` containing processed data.
      :return: total_aas ``int`` the total number of all modified amino acids
               quants ``dict`` of ``int`` keyed by amino acid, giving individual counts for each aa.