parameters: (self, size=None)
return_statement: return self._read(size, self._file.readline)
docstring: Read a line.
docstring_summary: Read a line.
docstring_tokens: Read a line .
function: def readline(self, size=None):
          """Read a line."""
          return self._read(size, self._file.readline)
function_tokens: def readline ( self , size = None ) : return self . _read ( size , self . _file . readline )