Python: Create a deque from an existing iterable object

Last update on December 21 2024 07:25:27 (UTC/GMT +8 hours)

Write a Python program to create a deque from an existing iterable object.

Sample Solution:

Python Code:

# Import the collections module to use the deque data structure
import collections

# Create a tuple named 'even_nums' containing even numbers 2, 4, and 6
even_nums = (2, 4, 6)

# Print the original tuple
print("Original tuple:")
print(even_nums)

# Print the data type of the 'even_nums' tuple
print(type(even_nums))

# Create a deque 'even_nums_deque' from the 'even_nums' tuple
even_nums_deque = collections.deque(even_nums)

# Print the original deque
print("\nOriginal deque:")
print(even_nums_deque)

# Append the numbers 8, 10, 12 to the right of the deque
even_nums_deque.append(8)
even_nums_deque.append(10)
even_nums_deque.append(12)

# Add 2 to the left of the deque
even_nums_deque.appendleft(2)

# Print the updated deque
print("New deque from an existing iterable object:")
print(even_nums_deque)

# Print the data type of the 'even_nums_deque' deque
print(type(even_nums_deque)) 

Sample Output:

Original tuple:
(2, 4, 6)
<class 'tuple'>

Original deque:
deque([2, 4, 6])
New deque from an existing iterable object:
deque([2, 2, 4, 6, 8, 10, 12])
<class 'collections.deque'>

Flowchart:

Python Code Editor:

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