Question

Weights:
[[ 0.30919516  0.29567152  0.11157229] 
 [ 0.26642913 -0.21269836 -0.58886886]]

第一个print语句按预期工作。

---------------------------------------------------------------------------
TypeError                                 Traceback (most recent call last)
<ipython-input-20-b0e4f93d01f8> in <module>()
  4     print('Weights:')
  5     print(sess.run(weights))
----> 6     print("{0:2f}".format(sess.run(weights)))

> TypeError: non-empty format string passed to object.__format__

使用str.format（）的第二个print语句给出了以下错误。

np.set_printoptions(precision=2)
weights = tf.Variable(tf.truncated_normal([2,3]))
with tf.Session() as sess:
    sess.run(tf.global_variables_initializer())
    print('Weights:')
    print(sess.run(weights)) 

Weights:
[[ 0.01 -0.42 -1.57]
 [-0.44  1.62  0.27]]

除了以下答案，我还发现np.set_printoptions（precision = 2）也有效。

<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Sample</title>
</head>
<body>
<h1 id="hello_world">Sample</h1>
<script type="text/javascript">
 var div = document.createElement("div");
  var t = document.createElement('template');
  t.innerHTML =  "Check Console tab for javascript output: Hello world!!!<br/><script type='text/javascript' >console.log('Hello world!!!');<\/script>";
  
  for (var i=0; i < t.content.childNodes.length; i++){
    var node = document.importNode(t.content.childNodes[i], true);
    div.appendChild(node);
  }
 document.body.appendChild(div);
</script>
 
</body>
</html>

Answer 1

您尝试打印整个数组，而format期望可以表示为float的单个值。试试这样：

print(np.around(sess.run(weights), 2)
#[[ 0.31  0.30  0.11] 
# [ 0.27 -0.21 -0.59]]

此外，正确的格式为0:.2f

如何将Tensor Flow变量打印到2位小数？

1 个答案: