keras.get_ssion().graph在tensorflow2.x中不起作用

import tensorflow as tf

# 获取默认计算图
graph = tf.compat.v1.get_default_graph()

# 打印图中的操作
for op in graph.get_operations():
    print(op.name)

import tensorflow.compat.v1 as tf
tf.disable_v2_behavior()

# 创建一个新的图
graph = tf.Graph()

# 在新图中定义操作
with graph.as_default():
    a = tf.constant(2)
    b = tf.constant(3)
    c = a + b

# 创建一个会话
with tf.compat.v1.Session(graph=graph) as sess:
    result = sess.run(c)
    print(result)