Here's my code from Py-StackExchange, in Python:

def format_relative_date(date):
    """Takes a datetime object and returns the date formatted as a string e.g. "3 minutes ago", like the real site.
    This is based roughly on George Edison's code from StackApps:
    http://stackapps.com/questions/1009/how-to-format-time-since-xxx-e-g-4-minutes-ago-similar-to-stack-exchange-site/1018#1018"""

    now = datetime.now()
    diff = (now - date).seconds

    # Anti-repetition! These simplify the code somewhat.
    plural = lambda d: 's' if d != 1 else ''
    frmt   = lambda d: (diff / float(d), plural(diff / float(d)))

    if diff < 60:
        return '%d second%s ago' % frmt(1)
    elif diff < 3600:
        return '%d minute%s ago' % frmt(60)
    elif diff < 86400:
        return '%d hour%s ago' % frmt(3600)
    elif diff < 172800:
        return 'yesterday'
    else:
        return date.strftime('M j / y - H:i')

Here's my code from Py-StackExchange, in Python:

def format_relative_date(date):
    """Takes a datetime object and returns the date formatted as a string e.g. "3 minutes ago", like the real site.
    This is based roughly on George Edison's code from StackApps:
    https://stackapps.com/questions/1009/how-to-format-time-since-xxx-e-g-4-minutes-ago-similar-to-stack-exchange-site/1018#1018"""

    now = datetime.now()
    diff = (now - date).seconds

    # Anti-repetition! These simplify the code somewhat.
    plural = lambda d: 's' if d != 1 else ''
    frmt   = lambda d: (diff / float(d), plural(diff / float(d)))

    if diff < 60:
        return '%d second%s ago' % frmt(1)
    elif diff < 3600:
        return '%d minute%s ago' % frmt(60)
    elif diff < 86400:
        return '%d hour%s ago' % frmt(3600)
    elif diff < 172800:
        return 'yesterday'
    else:
        return date.strftime('M j / y - H:i')

Here's my code from Py-StackExchange, in Python:

def format_relative_date(date):
    """Takes a datetime object and returns the date formatted as a string e.g. "3 minutes ago", like the real site.
    This is based roughly on George Edison's code from StackApps:
    http://stackapps.com/questions/1009/how-to-format-time-since-xxx-e-g-4-minutes-ago-similar-to-stack-exchange-site/1018#1018"""

    now = datetime.now()
    diff = (now - date).seconds

    # Anti-repitition! These simplify the code somewhat.
    plural = lambda d: 's' if d != 1 else ''
    frmt   = lambda d: (diff / float(d), plural(diff / float(d)))

    if diff < 60:
        return '%d second%s ago' % frmt(1)
    elif diff < 3600:
        return '%d minute%s ago' % frmt(60)
    elif diff < 86400:
        return '%d hour%s ago' % frmt(3600)
    elif diff < 172800:
        return 'yesterday'
    else:
        return date.strftime('M j / y - H:i')

Here's my code from Py-StackExchange, in Python:

def format_relative_date(date):
    """Takes a datetime object and returns the date formatted as a string e.g. "3 minutes ago", like the real site.
    This is based roughly on George Edison's code from StackApps:
    http://stackapps.com/questions/1009/how-to-format-time-since-xxx-e-g-4-minutes-ago-similar-to-stack-exchange-site/1018#1018"""

    now = datetime.now()
    diff = (now - date).seconds

    # Anti-repetition! These simplify the code somewhat.
    plural = lambda d: 's' if d != 1 else ''
    frmt   = lambda d: (diff / float(d), plural(diff / float(d)))

    if diff < 60:
        return '%d second%s ago' % frmt(1)
    elif diff < 3600:
        return '%d minute%s ago' % frmt(60)
    elif diff < 86400:
        return '%d hour%s ago' % frmt(3600)
    elif diff < 172800:
        return 'yesterday'
    else:
        return date.strftime('M j / y - H:i')