Circular Buffer in Python Part 1

circular_buffer.py

class CircularBuffer(object):

    def __init__(self, max_size=10):
        """Initialize the CircularBuffer with a max_size if set, otherwise
        max_size will default to 10"""
        self.buffer = [None] * max_size
        self.head = 0
        self.tail = 0
        self.max_size = max_size

    def __str__(self):
        """Return a formatted string representation of this CircularBuffer."""
        items = ['{!r}'.format(item) for item in self.buffer]
        return '[' + ', '.join(items) + ']'