parameters: (self, n = None)
docstring: Read and return up to n bytes.
  
          If the argument is omitted, None, or negative, reads and
          returns all data until EOF.
  
          If the argument is positive, and the underlying raw stream is
          not 'interactive', multiple raw reads may be issued to satisfy
          the byte count (unless EOF is reached first).  But for
          interactive raw streams (XXX and for pipes?), at most one raw
          read will be issued, and a short result does not imply that
          EOF is imminent.
  
          Returns an empty bytes array on EOF.
  
          Raises BlockingIOError if the underlying raw stream has no
          data at the moment.
docstring_summary: Read and return up to n bytes.
docstring_tokens: Read and return up to n bytes .
function: def read(self, n = None):
          """Read and return up to n bytes.
  
          If the argument is omitted, None, or negative, reads and
          returns all data until EOF.
  
          If the argument is positive, and the underlying raw stream is
          not 'interactive', multiple raw reads may be issued to satisfy
          the byte count (unless EOF is reached first).  But for
          interactive raw streams (XXX and for pipes?), at most one raw
          read will be issued, and a short result does not imply that
          EOF is imminent.
  
          Returns an empty bytes array on EOF.
  
          Raises BlockingIOError if the underlying raw stream has no
          data at the moment.
          """
          self._unsupported("read")
function_tokens: def read ( self , n = None ) : self . _unsupported ( "read" )