code: def readline(self, size=-1):
          "Ignore the `size` since a complete line must be processed."
          while True:
              try:
                  record = next(self.reader)
              except StopIteration:
                  break
  
              # Ensure this is a valid record
              if checks.record_is_valid(record):
                  # Process the line
                  cleaned = self.process_line(record)
                  if cleaned:
                      lines = []
                      for c in cleaned:
                          lines.append(self.outdel.join([str(x) for x in c]))
                      return '\n'.join(lines) + '\n'
  
          return 'f readline(self, size=-1):
          "Ignore the `size` since a complete line must be processed."
          while True:
              try:
                  record = next(self.reader)
              except StopIteration:
                  break
  
              # Ensure this is a valid record
              if checks.record_is_valid(record):
                  # Process the line
                  cleaned = self.process_line(record)
                  if cleaned:
                      lines = []
                      for c in cleaned:
                          lines.append(self.outdel.join([str(x) for x in c]))
                      return '\n'.join(lines) + '\n'
  
          return ''
docs: Ignore the `size` since a complete line must be processed.