utils.py

import jinja2

from datetime import datetime
def friendly_time(dt, past_="ago", 
    future_="from now", 
    default="just now"):
    """
    Returns string representing "time since"
    or "time until" e.g.
    3 days ago, 5 hours from now etc.
    """
    if dt is None or isinstance(dt, jinja2.runtime.Undefined): return None

    now = datetime.utcnow()
    if now > dt:
        diff = now - dt
        dt_is_past = True
    else:
        diff = dt - now
        dt_is_past = False

    periods = (
        (diff.days / 365, "year", "years"),
        (diff.days / 30, "month", "months"),
        (diff.days / 7, "week", "weeks"),
        (diff.days, "day", "days"),
        (diff.seconds / 3600, "hour", "hours"),
        (diff.seconds / 60, "minute", "minutes"),
        (diff.seconds, "second", "seconds"),
    )

    for period, singular, plural in periods:

        if period:
            return "%d %s %s" % (period, 
                singular if period == 1 else plural, 
                past_ if dt_is_past else future_)

    return default


INSULTS = ["softheads",
  "dingus",
  "dingoes",
  "morans",
  "softheads",
  "haters",
  "gits",
  "weenies",
  "softheads",
  "roundheads",
  "commies",
  "commit bastards",
  "closet Bush supporters",
  "friends",
  "comrades"
]