Python: Find the positions of all uppercase vowels (not counting Y) in even indices
Python Programming Puzzles: Exercise-33 with Solution
Write a Python program to find the positions of all uppercase vowels (not counting Y) in even indices of a given string.
From Wikipedia:
A vowel is a syllabic speech sound pronounced without any stricture in the vocal tract. Vowels are one of the two principal classes of speech sounds, the other being the consonant. Vowels vary in quality, in loudness and also in quantity. There are six vowels in the English language: a, e, i, o, u and sometimes y.
Input: w3rEsOUrcE Output: [6] Input: AEIOUYW Output: [0, 2, 4]
Pictorial Presentation:
Sample Solution:
Python Code:
#License: https://bit.ly/3oLErEI
def test(strs):
return [i for i, c in enumerate(strs) if i % 2 == 0 and c in "AEIOU"]
strs = "w3rEsOUrcE "
print("Original List:",strs)
print("Positions of all uppercase vowels (not counting Y) in even indices:")
print(test(strs))
strs = "AEIOUYW "
print("\nOriginal List:",strs)
print("Positions of all uppercase vowels (not counting Y) in even indices:")
print(test(strs))
Sample Output:
Original List: w3rEsOUrcE Positions of all uppercase vowels (not counting Y) in even indices: [6] Original List: AEIOUYW Positions of all uppercase vowels (not counting Y) in even indices: [0, 2, 4]
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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
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