Function _tz_from_env

src/pendulum/tz/local_timezone.py:227–240

(tzenv: str)

def _tz_from_env(tzenv: str) -> Timezone:
    if tzenv[0] == ":":
        tzenv = tzenv[1:]

    # TZ specifies a file
    if os.path.isfile(tzenv):
        with open(tzenv, "rb") as f:
            return Timezone.from_file(f)

    # TZ specifies a zoneinfo zone.
    try:
        return Timezone(tzenv)
    except ValueError:
        raise