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Python: Determine, for each string in a list, whether the last character is an isolated letter

Python Programming Puzzles: Exercise-21 with Solution

Write a Python program to check, for each string in a given list, whether the last character is an isolated letter or not. Return True or False.

Input:
['cat', 'car', 'fear', 'center']
Output:
[False, False, False, False]

Input:
['ca t', 'car', 'fea r', 'cente r']
Output:
[True, False, True, True]

Pictorial Presentation:

Python: Determine, for each string in a list, whether the last character is an isolated letter.
Python: Determine, for each string in a list, whether the last character is an isolated letter.

Sample Solution:

Python Code:

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

def test(strs):
    return [len(s.split(" ")[-1])==1 for s in strs]
strs =  ['cat', 'car', 'fear', 'center']
print("Original strings:")
print(strs)
print("Check, for each string in the said list, whether the last character is an isolated letter:")
print(test(strs))
strs =  ['ca t', 'car', 'fea r', 'cente r']
print("\nOriginal strings:")
print(strs)
print("Check, for each string in the said list, whether the last character is an isolated letter:")
print(test(strs))

Sample Output:

Original strings:
['cat', 'car', 'fear', 'center']
Check, for each string in the said list, whether the last character is an isolated letter:
[False, False, False, False]

Original strings:
['ca t', 'car', 'fea r', 'cente r']
Check, for each string in the said list, whether the last character is an isolated letter:
[True, False, True, True]

Flowchart:

Flowchart: Python - Determine, for each string in a list, whether the last character is an isolated letter.

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Python Code Editor :

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Previous: Determine the direction ('increasing' or 'decreasing') of monotonic sequence numbers.
Next: Compute the sum of the ASCII values of the upper-case characters in a given string.

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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