Source code for arguslib.misc.times

import datetime
import pytz




def convert_to_london_naive(dt: datetime.datetime) -> datetime.datetime:
    """
    Converts a datetime object to a naive datetime in the 'Europe/London' timezone.

    Args:
        dt: The input datetime object. If naive, it's assumed to be in UTC.
            If aware, it's converted from its current timezone.

    Returns:
        A naive datetime object representing the equivalent time in London.
    """
    # Define the target timezone
    london_tz = pytz.timezone("Europe/London")

    # 1. If the datetime is naive, assume it's UTC and make it timezone-aware.
    if dt.tzinfo is None or dt.tzinfo.utcoffset(dt) is None:
        dt_utc = pytz.utc.localize(dt)
    # 2. If it's already aware, we'll just use it as is for conversion.
    else:
        dt_utc = dt

    # 3. Convert the UTC datetime to the London timezone.
    #    The result will be a timezone-aware datetime in the London timezone.
    dt_local_aware = dt_utc.astimezone(london_tz)

    # 4. Remove the timezone information to make the datetime naive.
    dt_local_naive = dt_local_aware.replace(tzinfo=None)

    return dt_local_naive