#!/usr/bin/env python3
# sample-bom.py: a Python file that starts with a UTF-8 byte order mark (BOM),
# the bytes EF BB BF, which some Windows editors add.
# Free sample from 99helpers.com/file-types/py
#
# python3 sample-bom.py   works: Python skips a UTF-8 BOM.
# ./sample-bom.py         fails on macOS and Linux: the file no longer starts
#                         with #!, so the shell tries to run it as a shell
#                         script and reports errors such as
#                         "#!/usr/bin/env: No such file or directory".
# Fix: save as "UTF-8" rather than "UTF-8 with BOM".
from pathlib import Path

first = Path(__file__).read_bytes()[:3]
print("Starts with a UTF-8 BOM:", first == b"\xef\xbb\xbf")
print("Python ran this file without complaint.")