Class BufferedPipe

x.__init__(...) initializes x; see x.__class__.__doc__ for signature

Overrides: object.__init__

(inherited documentation)

Set an event on this buffer. When data is ready to be read (or the buffer has been closed), the event will be set. When no data is ready, the event will be cleared.

Parameters:

• event (Event) - the event to set/clear

Feed new data into this pipe. This method is assumed to be called from a separate thread, so synchronization is done.

Parameters:

• data (str) - the data to add

Returns true if data is buffered and ready to be read from this feeder. A False result does not mean that the feeder has closed; it means you may need to wait before more data arrives.

Returns: bool

True if a read call would immediately return at least one byte; False otherwise.

Read data from the pipe. The return value is a string representing the data received. The maximum amount of data to be received at once is specified by nbytes. If a string of length zero is returned, the pipe has been closed.

The optional timeout argument can be a nonnegative float expressing seconds, or None for no timeout. If a float is given, a PipeTimeout will be raised if the timeout period value has elapsed before any data arrives.

Parameters:

• nbytes (int) - maximum number of bytes to read
• timeout (float) - maximum seconds to wait (or None, the default, to wait forever)

Returns: str

data

Raises:

• PipeTimeout - if a timeout was specified and no data was ready before that timeout

Clear out the buffer and return all data that was in it.

Returns: str

any data that was in the buffer prior to clearing it out

Close this pipe object. Future calls to read after the buffer has been emptied will return immediately with an empty string.

Return the number of bytes buffered.

Returns: int

number of bytes bufferes