code: def get_metadata():
      
      motifs = _load_motifs()
  
      motif_names = sorted(list(motifs.keys()))
      df = pd.Series(motif_names).str.split(expand=True)
      df.rename(columns={0: "PWM_id", 1: "info1", 2: "info2"}, inplace=True)
  
      # compute the consensus
      consensus = pd.Series([PWM(motifs[m]).get_consensus() for m in motif_names])
      df["consensus"] = consensus
      return df
docs: Get pandas.DataFrame with metadata about the PWM's. Columns:
  
      - PWM_id (id of the PWM - pass to get_pwm_list() for getting the pwm
      - info1 - additional information about the motifs
      - info2
      - consensus: PWM consensus sequence