Question

How to extend deque and add elements to the left of deque with Python

Answer 1

import collections 
  
q = collections.deque([1, 18, '27', 2, 'python', 18, 19, 18]) 

print(q) 

q.extendleft([4, 10, 3.14, 'c']) 

print(q) 



   
'''
run:
    
deque([1, 18, '27', 2, 'python', 18, 19, 18])
deque(['c', 3.14, 10, 4, 1, 18, '27', 2, 'python', 18, 19, 18])
 
'''

 

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