code: def fix_e251(self, result):
          
          line_index = result['line'] - 1
          target = self.source[line_index]
  
          # This is necessary since pycodestyle sometimes reports columns that
          # goes past the end of the physical line. This happens in cases like,
          # foo(bar\n=None)
          c = min(result['column'] - 1,
                  len(target) - 1)
  
          if target[c].strip():
              fixed = target
          else:
              fixed = target[:c].rstrip() + target[c:].lstrip()
  
          # There could be an escaped newline
          #
          #     def foo(a=\
          #             1)
          if fixed.endswith(('=\\\n', '=\\\r\n', '=\\\r')):
              self.source[line_index] = fixed.rstrip('\n\r \t\\')
              self.source[line_index + 1] = self.source[line_index + 1].lstrip()
              return [line_index + 1, line_index + 2]  # Line indexed at 1
  
          self.source[result['line'] - 1] = fixed
docs: Remove whitespace around parameter '=' sign.