tf.Tensor.numpy

import tensorflow as tf
from math import pi

tf.enable_eager_execution()

def f(x):
  return tf.square(tf.sin(x))

assert f(pi/2).numpy() == 1.0
print(f(pi/2).numpy())
print(f(pi/2))

Output:
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1.0
tf.Tensor(1.0, shape=(), dtype=float32)
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