code: def read(self, size=-1):
          "Reads up to size bytes, but always completes the last line."
          buf = self.fin.read(size)
          if not buf:
              return ''
          lines = buf.splitlines()
          # Read the rest of the last line if necessary
          if not buf.endswith('\n'):
              last = lines.pop()
              partial = self.fin.readline()
              lines.append(last + partial)
          # Process the lines, concatenate them
          lines = [self.process_line(line.rstrip('\n')) for line in lines]
          return ''.join(linesf read(self, size=-1):
          "Reads up to size bytes, but always completes the last line."
          buf = self.fin.read(size)
          if not buf:
              return ''
          lines = buf.splitlines()
          # Read the rest of the last line if necessary
          if not buf.endswith('\n'):
              last = lines.pop()
              partial = self.fin.readline()
              lines.append(last + partial)
          # Process the lines, concatenate them
          lines = [self.process_line(line.rstrip('\n')) for line in lines]
          return ''.join(lines)
docs: Reads up to size bytes, but always completes the last line.