#### Check Pangram

A
g
```"""
wiki: https://en.wikipedia.org/wiki/Pangram
"""

def check_pangram(
input_str: str = "The quick brown fox jumps over the lazy dog",
) -> bool:
"""
A Pangram String contains all the alphabets at least once.
>>> check_pangram("The quick brown fox jumps over the lazy dog")
True
>>> check_pangram("Waltz, bad nymph, for quick jigs vex.")
True
>>> check_pangram("Jived fox nymph grabs quick waltz.")
True
>>> check_pangram("My name is Unknown")
False
>>> check_pangram("The quick brown fox jumps over the la_y dog")
False
>>> check_pangram()
True
"""
frequency = set()
input_str = input_str.replace(
" ", ""
)  # Replacing all the Whitespaces in our sentence
for alpha in input_str:
if "a" <= alpha.lower() <= "z":

return True if len(frequency) == 26 else False

def check_pangram_faster(
input_str: str = "The quick brown fox jumps over the lazy dog",
) -> bool:
"""
>>> check_pangram_faster("The quick brown fox jumps over the lazy dog")
True
>>> check_pangram_faster("Waltz, bad nymph, for quick jigs vex.")
True
>>> check_pangram_faster("Jived fox nymph grabs quick waltz.")
True
>>> check_pangram_faster("The quick brown fox jumps over the la_y dog")
False
>>> check_pangram_faster()
True
"""
flag = [False] * 26
for char in input_str:
if char.islower():
flag[ord(char) - 97] = True
elif char.isupper():
flag[ord(char) - 65] = True
return all(flag)

def benchmark() -> None:
"""
Benchmark code comparing different version.
"""
from timeit import timeit

setup = "from __main__ import check_pangram, check_pangram_faster"
print(timeit("check_pangram()", setup=setup))
print(timeit("check_pangram_faster()", setup=setup))

if __name__ == "__main__":
import doctest

doctest.testmod()
benchmark()
```