Fifo

This module implements no thread-safe fifo queues. A fifo queue behaves in such a way that the first element inserted in the queue is also the first element to be removed (first in, first out).

Fifo class

class Fifo

Fifo(size=16, only_bytes=False)

Create a Fifo instance with size "places" for items. If only_bytes is True, the Fifo will use a bytearray to store bytes; if False it will use a list.

method is_full

is_full()

Return True if the fifo is full

method is_empty

is_empty()

Return True if the fifo is empty

method put

put(obj)

Insert obj into the fifo queue. Raise FifoFullError if the fifo is full.

method get

get()

Get an object out of the fifo queue. Raise FifoEmptyError if the fifo is empty.

method peek

peek()

Return the object at the head of the fifo queu without removing it. Raise FifoEmptyError if the fifo is empty.

method put_all

put_all(objs)

Put every item of objs into the fifo queue.

method elements

elements()

Return the number of items in the queue.

method clear

clear()

Clear the fifo by removing all elements