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Python: Find the even-length words and sort them by length

Python Programming Puzzles: Exercise-50 with Solution

Write a Python program to find the even-length words from a given list of words and sort them by length.

Input:
['Red', 'Black', 'White', 'Green', 'Pink', 'Orange']
Output:
['Pink', 'Orange']

Input:
['The', 'worm', 'ate', 'a', 'bird', 'imagine', 'that', '!', 'Absurd', '!!']
Output:
['!!', 'bird', 'that', 'worm', 'Absurd']

Pictorial Presentation:

Python: Find the even-length words and sort them by length.

Sample Solution:

Python Code:

#License: https://bit.ly/3oLErEI

def test(nums):
     return sorted([w for w in words if len(w) % 2 == 0], key=lambda w: (len(w), w))
 
words = ["Red", "Black", "White", "Green", "Pink", "Orange"]
print("Original list of words:")
print(words)
print("Find the even-length words and sort them by length in the said list of words:")
print(test(words))
words = ['The', 'worm', 'ate', 'a', 'bird', 'imagine', 'that', '!', 'Absurd', '!!']
print("\nOriginal list of words:")
print(words)
print("Find the even-length words and sort them by length in the said list of words:")
print(test(words))

Sample Output:

Original list of words:
['Red', 'Black', 'White', 'Green', 'Pink', 'Orange']
Find the even-length words and sort them by length in the said list of words:
['Pink', 'Orange']

Original list of words:
['The', 'worm', 'ate', 'a', 'bird', 'imagine', 'that', '!', 'Absurd', '!!']
Find the even-length words and sort them by length in the said list of words:
['!!', 'bird', 'that', 'worm', 'Absurd']

Flowchart:

Flowchart: Python - Find the even-length words and sort them by length.

Visualize Python code execution:

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Python Code Editor :

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Previous: Find the h-index, the largest positive number h such that h occurs in the sequence at least h times.
Next: Find the first n Fibonacci numbers.

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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