Validate pangram
Level: Beginner (score: 2)
A pangram, according to the Oxford English Dictionary, is a sentence or verse that contains all of the letters of the alphabet.
Given a string containing only English letters, write a function that returns True if sentence is a pangram or False otherwise.
Make sure to remove any whitespace and lowercase the string.
Example:
>>> from pangram import validate_pangram
>>> sentence = "The quick brown fox jumps over a lazy dog"
>>> validate_pangram(sentence)
True
Example 2:
>>> from pangram import validate_pangram
>>> sentence = "PYBITES IS A COMMUNITY OF PYTHON CODERS"
>>> validate_pangram(sentence)
False
Keep calm and code in Python!