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Python: Add more number of elements to a deque object from an iterable object

Python Collections: Exercise-9 with Solution

Write a Python program to add more number of elements to a deque object from an iterable object.

Sample Solution:

Python Code:

import collections
even_nums = (2, 4, 6, 8, 10)
even_deque = collections.deque(even_nums)
print("Even numbers:")
print(even_deque)
more_even_nums = (12, 14, 16, 18, 20)
even_deque.extend(more_even_nums)
print("More even numbers:")
print(even_deque)

Sample Output:

Even numbers:
deque([2, 4, 6, 8, 10])
More even numbers:
deque([2, 4, 6, 8, 10, 12, 14, 16, 18, 20])

Flowchart:

Python Collections: Add more number of elements to a deque object from an iterable object.

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Previous: Write a Python program to create a deque from an existing iterable object.
Next: Write a Python program to remove all the elements of a given deque object.

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Python: Tips of the Day

Find current directory and file's directory:

To get the full path to the directory a Python file is contained in, write this in that file:

import os 
dir_path = os.path.dirname(os.path.realpath(__file__))

(Note that the incantation above won't work if you've already used os.chdir() to change your current working directory, since the value of the __file__ constant is relative to the current working directory and is not changed by an os.chdir() call.)

To get the current working directory use

import os
cwd = os.getcwd()

Documentation references for the modules, constants and functions used above:

  • The os and os.path modules.
  • The __file__ constant
  • os.path.realpath(path) (returns "the canonical path of the specified filename, eliminating any symbolic links encountered in the path")
  • os.path.dirname(path) (returns "the directory name of pathname path")
  • os.getcwd() (returns "a string representing the current working directory")
  • os.chdir(path) ("change the current working directory to path")

Ref: https://bit.ly/3fy0R6m