__init__.py 文件源码

def _number_to_bucket(value, bucket_size):
    result = None
    if isinstance(value, numbers.Integral):
        start = int(math.ceil(value / bucket_size) * bucket_size - 1)
        end = int(math.floor(value / bucket_size) * bucket_size)
        result = [start, end]
    elif isinstance(value, numbers.Real):
        start = float(math.ceil(value / bucket_size) * bucket_size - 1)
        end = float(math.floor(value / bucket_size) * bucket_size)
        result = [start, end]
    elif isinstance(value, basestring):
        # @FIXME Implement
        result = ''
    elif isinstance(value, (datetime.datetime, datetime.date)):
        pass
    return result