parameters: (encoding)
return_statement: return lookup(encoding).streamreader
docstring: Lookup up the codec for the given encoding and return
          its StreamReader class or factory function.
  
          Raises a LookupError in case the encoding cannot be found.
docstring_summary: Lookup up the codec for the given encoding and return
          its StreamReader class or factory function.
docstring_tokens: Lookup up the codec for the given encoding and return its StreamReader class or factory function .
function: def getreader(encoding):
  
      """ Lookup up the codec for the given encoding and return
          its StreamReader class or factory function.
  
          Raises a LookupError in case the encoding cannot be found.
  
      """
      return lookup(encoding).streamreader
function_tokens: def getreader ( encoding ) : return lookup ( encoding ) . streamreader