test.py

import tensorflow as tf
import numpy as np


x = np.array([1., 2., 3., 4.])
y = np.array([0., -1., -2, -3])
fn = tf.estimator.inputs.numpy_input_fn(
    {"x": x}, y, batch_size=4, num_epochs=None, shuffle=True)

sess = tf.Session()

features, target = fn()
for name in features:
    print(str.format("feature {}: {}", name, sess.run(features[name])))
print(str.format("target: {}", sess.run(target)))