Question

How to set deque to maximum length and append values in Python

Answer 1

import collections     

d = collections.deque(maxlen=3)
print(d) 

d.append(34)
d.append(12)
d.append(7)
d.append(99)

print(d) 
print(d[0]) 
print(d[1]) 
print(d[2]) 
# print(d[3]) # IndexError: deque index out of range



'''
run:

deque([], maxlen=3)
deque([12, 7, 99], maxlen=3)
12
7
99

'''

 

70+ SQL courses for beginners and professionals