Python Program to accept string starting with vowel

When it is required to accept strings that start with a vowel, Python's startswith() method can be used to check if a string begins with specific characters. This method is particularly useful for filtering strings based on their first character.

Basic Example

Below is a demonstration of filtering strings that start with vowels ?

my_list = ["Hi", "there", "how", "are", "u", "doing"]

print("The list is:")
print(my_list)

my_result = []
vowels = "aeiou"

for word in my_list:
    flag = False
    
    for letter in vowels:
        if word.lower().startswith(letter):
            flag = True
            break
    
    if flag:
        my_result.append(word)

print("Strings starting with vowels:")
print(my_result)

The list is:
['Hi', 'there', 'how', 'are', 'u', 'doing']
Strings starting with vowels:
['are', 'u']

Method 1: Using Multiple Conditions

A more direct approach using startswith() with a tuple of vowels ?

words = ["apple", "banana", "orange", "grape", "umbrella", "kiwi"]

vowel_words = []
vowels = ('a', 'e', 'i', 'o', 'u', 'A', 'E', 'I', 'O', 'U')

for word in words:
    if word.startswith(vowels):
        vowel_words.append(word)

print("Words starting with vowels:")
print(vowel_words)

Words starting with vowels:
['apple', 'orange', 'umbrella']

Method 2: Using List Comprehension

A more concise approach using list comprehension ?

words = ["apple", "banana", "orange", "grape", "umbrella", "kiwi"]

vowel_words = [word for word in words if word[0].lower() in 'aeiou']

print("Words starting with vowels:")
print(vowel_words)

Words starting with vowels:
['apple', 'orange', 'umbrella']

Method 3: Using Filter Function

Using Python's built-in filter() function for a functional approach ?

words = ["apple", "banana", "orange", "grape", "umbrella", "kiwi"]

def starts_with_vowel(word):
    return word[0].lower() in 'aeiou'

vowel_words = list(filter(starts_with_vowel, words))

print("Words starting with vowels:")
print(vowel_words)

Words starting with vowels:
['apple', 'orange', 'umbrella']

Comparison

Conclusion

Use list comprehension for concise vowel filtering. The startswith() method with tuple arguments provides clean and readable code for checking multiple starting characters.