Python Program to Check Pangram Phrases
import re
def panrgam(phrase):
letters = re.sub(r'[^a-zA-Z]', '', phrase)
letter_set = set(letters.lower())
if len(letter_set) == 26:
return True
else:
return False
str = 'The quick brown fox jumps over the lazy dog'
print(panrgam(str))Python Program to Check Pangram Phrases
What is a Pangram?
A pangram is a sentence or phrase that contains every letter of the alphabet at least once.
Method 1: Using Set Operations
python
def is_pangram_set(phrase):
"""
Check if a phrase is a pangram using set operations
"""
# Convert to lowercase and remove non-alphabetic characters
clean_phrase = ''.join(char.lower() for char in phrase if char.isalpha())
# Check if the set of characters has exactly 26 elements
return len(set(clean_phrase)) == 26
# Example usage
phrase = "The quick brown fox jumps over the lazy dog"
print(f"'{phrase}' is pangram: {is_pangram_set(phrase)}")
Method 2: Using ASCII Values
python
def is_pangram_ascii(phrase):
"""
Check if a phrase is a pangram using ASCII values
"""
# Convert to lowercase
phrase = phrase.lower()
# Check if all letters from a to z are present
for char in range(ord('a'), ord('z') + 1):
if chr(char) not in phrase:
return False
return True
Method 3: Using String Module
python
import string
def is_pangram_string_module(phrase):
"""
Check if a phrase is a pangram using string module
"""
# Convert to lowercase
phrase = phrase.lower()
# Check if all ASCII lowercase letters are in the phrase
return all(char in phrase for char in string.ascii_lowercase)
Method 4: Using Counter (Collections Module)
python
from collections import Counter
def is_pangram_counter(phrase):
"""
Check if a phrase is a pangram using Counter
"""
# Count only alphabetic characters
char_count = Counter(char.lower() for char in phrase if char.isalpha())
# Check if we have exactly 26 unique letters
return len(char_count) == 26
Complete Program with All Methods
python
import string
from collections import Counter
def is_pangram_set(phrase):
"""Check using set operations"""
clean_phrase = ''.join(char.lower() for char in phrase if char.isalpha())
return len(set(clean_phrase)) == 26
def is_pangram_ascii(phrase):
"""Check using ASCII values"""
phrase = phrase.lower()
for char in range(ord('a'), ord('z') + 1):
if chr(char) not in phrase:
return False
return True
def is_pangram_string_module(phrase):
"""Check using string module"""
phrase = phrase.lower()
return all(char in phrase for char in string.ascii_lowercase)
def is_pangram_counter(phrase):
"""Check using Counter"""
char_count = Counter(char.lower() for char in phrase if char.isalpha())
return len(char_count) == 26
def check_pangram_all_methods(phrase):
"""
Check pangram using all methods and return results
"""
methods = [
("Set Operations", is_pangram_set),
("ASCII Values", is_pangram_ascii),
("String Module", is_pangram_string_module),
("Counter", is_pangram_counter)
]
results = {}
for method_name, method_func in methods:
results[method_name] = method_func(phrase)
return results
def get_missing_letters(phrase):
"""
Return the missing letters if not a pangram
"""
phrase = phrase.lower()
all_letters = set(string.ascii_lowercase)
present_letters = set(char for char in phrase if char.isalpha())
missing_letters = sorted(all_letters - present_letters)
return missing_letters
def display_pangram_info(phrase):
"""
Display comprehensive information about the phrase
"""
print(f"\nAnalyzing phrase: '{phrase}'")
print("=" * 50)
# Check with all methods
results = check_pangram_all_methods(phrase)
# Display results from each method
for method, is_pangram in results.items():
status = "✅ Pangram" if is_pangram else "❌ Not Pangram"
print(f"{method:20}: {status}")
# Check if all methods agree
if all(results.values()):
print("\n🎉 All methods confirm: This is a perfect pangram!")
elif not any(results.values()):
print("\n❌ All methods confirm: This is not a pangram.")
else:
print("\n⚠️ Methods disagree! (This shouldn't happen with proper implementation)")
# Show missing letters if not pangram
if not all(results.values()):
missing = get_missing_letters(phrase)
print(f"\nMissing letters ({len(missing)}): {', '.join(missing)}")
# Show statistics
clean_phrase = ''.join(char.lower() for char in phrase if char.isalpha())
unique_letters = len(set(clean_phrase))
print(f"\n📊 Statistics:")
print(f"Total characters: {len(phrase)}")
print(f"Alphabetic characters: {len(clean_phrase)}")
print(f"Unique letters: {unique_letters}/26")
print(f"Completion: {(unique_letters/26)*100:.1f}%")
def pangram_checker():
"""
Interactive pangram checker
"""
print("🔤 Pangram Checker")
print("A pangram contains all letters of the alphabet (a-z)")
print("Type 'quit' to exit\n")
while True:
phrase = input("Enter a phrase to check: ").strip()
if phrase.lower() == 'quit':
print("Goodbye! 👋")
break
if not phrase:
print("Please enter a phrase!")
continue
display_pangram_info(phrase)
# Ask if user wants to continue
continue_check = input("\nCheck another phrase? (y/n): ").lower()
if continue_check != 'y':
print("Goodbye! 👋")
break
# Example test cases
def test_pangrams():
"""Test various pangram examples"""
test_cases = [
# Perfect pangrams
"The quick brown fox jumps over the lazy dog",
"Pack my box with five dozen liquor jugs",
"How vexingly quick daft zebras jump!",
# Not pangrams
"Hello world",
"Python programming is fun",
"This is not a pangram",
# Edge cases
"", # Empty string
"1234567890!@#$%^&*()", # No letters
"A" * 26, # All same letter
]
print("Testing Pangram Examples:")
print("=" * 60)
for phrase in test_cases:
result = is_pangram_set(phrase)
status = "✅ Pangram" if result else "❌ Not Pangram"
print(f"{status}: '{phrase}'")
if not result:
missing = get_missing_letters(phrase)
print(f" Missing: {', '.join(missing)}")
print("-" * 40)
if __name__ == "__main__":
# Run interactive checker
pangram_checker()
# Uncomment to run test cases
# test_pangrams()
Simple Version for Quick Use
python
def is_pangram_simple(phrase):
"""
Simple one-line pangram checker
"""
return len(set(char for char in phrase.lower() if char.isalpha())) == 26
# Quick usage examples
phrases = [
"The quick brown fox jumps over the lazy dog",
"Hello world",
"Pack my box with five dozen liquor jugs"
]
for phrase in phrases:
result = is_pangram_simple(phrase)
print(f"'{phrase}' -> {'Pangram' if result else 'Not Pangram'}")
How to Use:
- Run the interactive checker:
bash
python pangram_checker.py
- Test specific phrases:
python
phrase = "Your phrase here"
print(f"Is pangram: {is_pangram_set(phrase)}")
- Get missing letters:
python
missing = get_missing_letters("Hello World")
print(f"Missing letters: {missing}")
Features:
- ✅ Multiple implementation methods
- ✅ Missing letters identification
- ✅ Statistics and analysis
- ✅ Interactive mode
- ✅ Test cases included
- ✅ Error handling
- ✅ Case insensitive
- ✅ Ignores numbers and symbols
Example Output:
text
Analyzing phrase: 'The quick brown fox jumps over the lazy dog' ================================================== Set Operations : ✅ Pangram ASCII Values : ✅ Pangram String Module : ✅ Pangram Counter : ✅ Pangram 🎉 All methods confirm: This is a perfect pangram! 📊 Statistics: Total characters: 43 Alphabetic characters: 33 Unique letters: 26/26 Completion: 100.0%
This program provides a comprehensive solution for checking pangram phrases with multiple approaches and detailed analysis!
