backend_tensorflow.py 文件源码

def variable(value, dtype=None, borrow=None, broadcastable=None, name=None, settable=True):
    if dtype is None:
        dtype = np.float32
    x = tf.Variable(value, dtype=tf.as_dtype(dtype), name=name)
    x._statestream_settable = settable
    if settable:
        x._assign_placeholder = tf.placeholder(dtype, shape=value.shape)
        x._assign_op = x.assign(x._assign_placeholder)
    return x