python-如何在张量流中迭代每个嵌套张量的第一个元素，python？

您可能尚未评估张量。使用tensor.eval()或session.run(tensor)评估结果：

import tensorflow as tf

X = tf.constant([['a', 'y', 'b'],
              ['b', 'y', 'a'],
              ['a', 'y', 'c'],
              ['c', 'y', 'a'],
              ['a', 'y', 'd'],
              ['c', 'y', 'd'],
              ['b', 'y', 'c'],
              ['f', 'y', 'e']])

with tf.Session() as sess:
  for i in X[:,0].eval():
    element= i.decode("utf-8") 
    print(element)

  # Or using sess.run()
  #for j in sess.run(X[:,0]):
  #  element= j.decode("utf-8") 
  #  print(element)

输出：

a
b
a
c
a
c
b
f