dnn.py 文件源码

def ensure_float(val, default, name):
    if val is None:
        return default.clone()
    if not isinstance(val, Variable):
        val = constant(val)
    if hasattr(val, 'ndim') and val.ndim == 0:
        val = as_scalar(val)
    if not isinstance(val.type, theano.scalar.Scalar):
        raise TypeError("%s: expected a scalar value" % (name,))
    if not val.type.dtype == 'float32':
        raise TypeError("%s: type is not float32" % (name,))
    return val