Relative interval pretty-printer for timestamps

gistfile1.py

def pretty_date(time=None, utc=False):
    """
    Get a datetime object, time tuple, or int/float Epoch timestamp
    and return a pretty string like 'an hour ago', 'Yesterday', 
    '3 months ago', 'just now', etc.

    If utc=True, naive date comparisons will assume UTC rather than
    the local timezone.

    Modified to handle timezone-aware datetime instances, floats, and time tuples
    Source: http://stackoverflow.com/questions/1551382/python-user-friendly-time-format
    """
    from datetime import datetime, timedelta

    if not time:
        diff = timedelta(0)
    if isinstance(time, (int, float)):
        if utc:
            diff = datetime.utcnow() - datetime.utcfromtimestamp(time)
        else:
            diff = datetime.now() - datetime.fromtimestamp(time)
    elif isinstance(time, datetime):
        if time.tzinfo is None:
            if utc:
                diff = datetime.utcnow() - time
            else:
                diff = datetime.now() - time
        else:
            diff = datetime.now(time.tzinfo) - time

    second_diff = diff.seconds
    day_diff = diff.days

    if day_diff < 0:
        return ''

    if day_diff == 0:
        if second_diff < 10:
            return "just now"
        if second_diff < 60:
            return str(second_diff) + " seconds ago"
        if second_diff < 120:
            return  "a minute ago"
        if second_diff < 3600:
            return str( second_diff / 60 ) + " minutes ago"
        if second_diff < 7200:
            return "an hour ago"
        if second_diff < 86400:
            return str( second_diff / 3600 ) + " hours ago"
    if day_diff == 1:
        return "Yesterday"
    if day_diff < 7:
        return str(day_diff) + " days ago"
    if day_diff < 31:
        return str(day_diff/7) + " weeks ago"
    if day_diff < 365:
        return str(day_diff/30) + " months ago"
    return str(day_diff/365) + " years ago"

Thanks for Posting