code: def format_string(f, val, grouping=False, monetary=False):
      """Formats a string in the same way that the % formatting would use,
      but takes the current locale into account.
  
      Grouping is applied if the third parameter is true.
      Conversion uses monetary thousands separator and grouping strings if
      forth parameter monetary is true."""
      percents = list(_percent_re.finditer(f))
      new_f = _percent_re.sub("%s", f)
  
      if isinstance(val, _collections_abc.Mapping):
          new_val = []
          for perc in percents:
              if perc.group()[-1] == "%":
                  new_val.append("%")
              else:
                  new_val.append(
                      _format(perc.group(), val, grouping, monetary)
                  )
      else:
          if not isinstance(val, tuple):
              val = (val,)
          new_val = []
          i = 0
          for perc in percents:
              if perc.group()[-1] == "%":
                  new_val.append("%")
              else:
                  starcount = perc.group("modifiers").count("*")
                  new_val.append(
                      _format(
                          perc.group(),
                          val[i],
                          grouping,
                          monetary,
                          *val[i + 1 : i + 1 + starcount],
                      )
                  )
                  i += 1 + starcount
      val = tuple(new_val)
  
      return new_f % val
  
imports: import sys
  import encodings
  import encodings.aliases
  import re
  import _collections_abc
  from builtins import str
  import functools
label_desc: Use image node_id 9 for calling a global function with example usage: format_string(f, val, grouping, monetary) and returns: unknown