20.1.2 Port Objects 
Port objects, as returned by openport(), have the following
methods:
- 
Close the port.
- 
Return the file descriptor as an int.
- 
Return the number of filled samples.
- 
Return the number of fillable samples.
- 
Read a number of samples from the queue, blocking if necessary.
Return the data as a string containing the raw data, (e.g., 2 bytes per
sample in big-endian byte order (high byte, low byte) if you have set
the sample width to 2 bytes).
- 
Write samples into the queue, blocking if necessary.  The samples are
encoded as described for the readsamps() return value.
- 
Return the `fill point'.
- 
Set the `fill point'.
- 
Return a configuration object containing the current configuration of
the port.
- 
Set the configuration from the argument, a configuration object.
- 
Get status information on last error.
Release 2.4.3, documentation updated on 29 March 2006.
 
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