docs: def to_int(s):
      """ converts a string to an integer
  
      >>> to_int('1_000_000')
      1000000
  
      >>> to_int('1e6')
      1000000
  
      >>> to_int('1000')
      1000
      """
      try:
          return int(s.replace('_', ''))
      except ValueError:
          return int(ast.literal_eval(s))