freeCodeCamp/curriculum/challenges/english/99-dev-playground/daily-coding-challenges-python/python-challenge-24.md

id, title, challengeType, dashedName

id	title	challengeType	dashedName
6821eccb237de8297eaee7a6	Python Challenge 24: Pangram	29	python-challenge-24

--description--

Given a word or sentence and a string of lowercase letters, determine if the word or sentence uses all the letters from the given set at least once and no other letters.

• Ignore non-alphabetical characters in the word or sentence.
• Ignore letter casing in the word or sentence.

--hints--

is_pangram("hello", "helo") should return True

({test: () => { runPython(`
from unittest import TestCase
TestCase().assertTrue(is_pangram("hello", "helo"))`)
}})

is_pangram("hello", "hel") should return False

({test: () => { runPython(`
from unittest import TestCase
TestCase().assertFalse(is_pangram("hello", "hel"))`)
}})

is_pangram("hello", "helow") should return False

({test: () => { runPython(`
from unittest import TestCase
TestCase().assertFalse(is_pangram("hello", "helow"))`)
}})

is_pangram("hello world", "helowrd") should return True

({test: () => { runPython(`
from unittest import TestCase
TestCase().assertTrue(is_pangram("hello world", "helowrd"))`)
}})

is_pangram("Hello World!", "helowrd") should return True

({test: () => { runPython(`
from unittest import TestCase
TestCase().assertTrue(is_pangram("Hello World!", "helowrd"))`)
}})

is_pangram("Hello World!", "heliowrd") should return False

({test: () => { runPython(`
from unittest import TestCase
TestCase().assertFalse(is_pangram("Hello World!", "heliowrd"))`)
}})

is_pangram("freeCodeCamp", "frcdmp") should return False

({test: () => { runPython(`
from unittest import TestCase
TestCase().assertFalse(is_pangram("freeCodeCamp", "frcdmp"))`)
}})

is_pangram("The quick brown fox jumps over the lazy dog.", "abcdefghijklmnopqrstuvwxyz") should return True

({test: () => { runPython(`
from unittest import TestCase
TestCase().assertTrue(is_pangram("The quick brown fox jumps over the lazy dog.", "abcdefghijklmnopqrstuvwxyz"))`)
}})

--seed--

--seed-contents--

def is_pangram(sentence, letters):

    return sentence

--solutions--

import re
def is_pangram(sentence, letters):
    used_letters = []
    for char in sentence.lower():
        if re.match(r'[a-z]', char) and char not in used_letters:
            used_letters.append(char)

    sorted_letters = ''.join(sorted(letters.lower()))
    sorted_used_letters = ''.join(sorted(used_letters))

    return sorted_letters == sorted_used_letters