(start, end, step=1, desc=False)
Generates dates between *atrt* and *end*.
Generates dates between *atrt* and *end*.
Generates dates between * atrt * and * end * .
def dategenerator(start, end, step=1, desc=False):
    '''Generates dates between *atrt* and *end*.'''
    delta = timedelta(abs(step))
    end = max(start, end)
    if desc:
        dt = end
        while dt >= start:
            yield dt
            dt -= delta
    else:
        dt = start
        while dt <= end:
            yield dt
            dt += delta
def dategenerator ( start , end , step = 1 , desc = False ) : delta = timedelta ( abs ( step ) ) end = max ( start , end ) if desc : dt = end while dt >= start : yield dt dt -= delta else : dt = start while dt <= end : yield dt dt += delta