docs: def fix_code(source_code, line_ranges, options=None, verbose=0):
      '''Apply autopep8 over the line_ranges, returns the corrected code.
  
      Note: though this is not checked for line_ranges should not overlap.
  
      Example
      -------
      >>> code = "def f( x ):\\n  if  True:\\n    return 2*x"
      >>> print(fix_code(code, [(1, 1), (3, 3)]))
      def f(x):
        if  True:
            return 2 * x
  
      '''
      if options is None:
          from pep8radius.main import parse_args
          options = parse_args()
  
      if getattr(options, "yapf", False):
          from yapf.yapflib.yapf_api import FormatCode
          result = FormatCode(source_code, style_config=options.style, lines=line_ranges)
          # yapf<0.3 returns diff as str, >=0.3 returns a tuple of (diff, changed)
          return result[0] if isinstance(result, tuple) else result
  
      line_ranges = reversed(line_ranges)
      # Apply line fixes "up" the file (i.e. in reverse) so that
      # fixes do not affect changes we're yet to make.
      partial = source_code
      for start, end in line_ranges:
          partial = fix_line_range(partial, start, end, options)
          _maybe_print('.', end='', max_=1, verbose=verbose)
      _maybe_print('', max_=1, verbose=verbose)
      fixed = partial
      return fixed