In [1]:

    

from collections import deque
import random


    

In [2]:

    

memory = deque(maxlen=5)


    

In [3]:

    

memory


    

    
Out[3]:





deque([])

In [4]:

    

memory.append((0, "mann"))


    

In [5]:

    

memory


    

    
Out[5]:





deque([(0, 'mann')])

In [6]:

    

len(memory)


    

    
Out[6]:





1

In [7]:

    

memory.append((1, "un"))
memory.append((2, "daou"))
memory.append((3, "tri"))
memory.append((4, "pewar"))
memory


    

    
Out[7]:





deque([(0, 'mann'), (1, 'un'), (2, 'daou'), (3, 'tri'), (4, 'pewar')])

In [8]:

    

memory.append((5, "pemp"))
memory


    

    
Out[8]:





deque([(1, 'un'), (2, 'daou'), (3, 'tri'), (4, 'pewar'), (5, 'pemp')])

In [9]:

    

batch_size = 2
minibatch = random.sample(memory, batch_size)
minibatch


    

    
Out[9]:





[(4, 'pewar'), (3, 'tri')]