import glob
from typing import Generator, List
def get_files_content(filenames: List[str]) -> Generator[str, None, None]:
for filename in filenames:
with open(filename) as f:
yield f.read()
def read_files(files_glob: str) -> str:
filenames = sorted(glob.glob(files_glob))
return '\n'.join(list(get_files_content(filenames)))
