🚀 Day 65/150 – Count Consonants in a String in Python

Consonants are all alphabet characters except vowels (a, e, i, o, u).

In Python, we can count consonants using loops, conditions, list comprehensions, and functions.

Let’s explore different methods 👇

🔹 Method 1 – Using for Loop

text = "Python Programming" count = 0 for ch in text.lower(): if ch.isalpha() and ch not in "aeiou": count += 1 print("Consonant Count:", count)

✅ Output

Consonant Count: 13

📌 Checks whether the character is an alphabet and not a vowel.

🔹 Method 2 – Taking User Input

text = input("Enter a string: ")

count = 0

for ch in text.lower():
    if ch.isalpha() and ch not in "aeiou":
        count += 1

print("Consonant Count:", count)

📌 Allows users to enter any string dynamically.

🔹 Method 3 – Using List Comprehension

text = "Python Programming" count = sum([1 for ch in text.lower() if ch.isalpha() and ch not in "aeiou"]) print("Consonant Count:", count)

✅ Output

Consonant Count: 13

📌 Cleaner and shorter Pythonic approach.

🔹 Method 4 – Using Function

def count_consonants(text): count = 0 for ch in text.lower(): if ch.isalpha() and ch not in "aeiou": count += 1 return count print(count_consonants("Python Programming"))

✅ Output

13

📌 Best method for reusable programs.

 Key Takeaways

✅ isalpha() ignores spaces and symbols
✅ not in "aeiou" helps identify consonants
✅ List comprehensions make code compact
✅ Functions improve code reusability