code: def print_variant(variant, include, exclude):
      
      if include:
          for info in variant.INFO:
              key = info[0]
              if not key in include:
                  del variant.INFO[key]
      if exclude:
          for exc in exclude:
              if variant.INFO.get(exc):
                  del variant.INFO[exc]
                  
      print_string = str(variant).rstrip()
      click.echo(print_string)
docs: Print a vcf variant
      
      Parameters
      ----------
      variant: cyvcf2.Variant
      include: tuple
          set of strings with info fields that should be included
      include: tuple
          set of strings with info fields that should be included