all on lower case

Pangram
Pangram in Python 
from string import ascii_lowercase


def is_pangram(sentence):
    return all(letter in sentence.lower() for letter in ascii_lowercase)
  • This begins by importing all of the ascii_lowercase letters.
  • It lowercases the input by using the lower() method.
  • It then checks if all letters in the lowercase alphabet are contained in the lowercased sentence, using the all() function.
  • If all of the letters in the alphabet are contained in the sentence, then the function will return True.
Note

Instead of lower(), the casefold method could be used to lowercase the letters. casefold() differs from lower() in lowercasing certain Unicode characters. At the time of writing, those differences are not of concern to this exercise. Also, casefold() benched slower than lower().

4th Dec 2024 · Found it useful?

Other Approaches to Pangram in Python

Other ways our community solved this exercise
from string import ascii_lowercase

ALPHABET = set(ascii_lowercase)


def is_pangram(sentence):
    return ALPHABET.issubset(sentence.lower())
set with issubset

Use set with issubset. 

def is_pangram(sentence):
    return len([ltr for ltr in set(sentence.lower()) if ltr.isalpha()]) \
        == 26
set with len

Use set with len. 

def is_pangram(sentence):
    letter_flags = 0
    for letter in sentence:
        if letter >= 'a' and letter <= 'z':
            letter_flags |= 1 << ord(letter) - A_LCASE
        elif letter >= 'A' and letter <= 'Z':
            letter_flags |= 1 << ord(letter) - A_UCASE
    return letter_flags == ALL_26_BITS_SET
Bit field

Use a bit field to keep track of used letters.