Why Do I get: TypeError: choice() takes 2 positional arguments but 4 were given?
<p>I have a problem with random.choice which I can't understand. I pass 3 arguments to the function which is allowed to have 4 (<a href="http://docs.scipy.org/doc/numpy-1.10.0/reference/generated/numpy.random.choice.html" rel="nofollow">http://docs.scipy.org/doc/numpy-1.10.0/reference/generated/numpy.random.choice.html</a>), but it writes I am allowed to give only 2 and 4 were given. </p>

<pre><code>def load_data():
    dataset = load_boston()
    num_samples = size(dataset.data, 0)
    test_set_sz = int(1.0 * num_samples / 10)
    tst_sub_inds = random.choice(range(num_samples), test_set_sz, False)
    data_test, label_test = dataset.data[tst_sub_inds, :], dataset.target[tst_sub_inds]
    trn_sub_inds = list(set(range(num_samples)) - set(tst_sub_inds)) 
    data_train, label_train = dataset.data[trn_sub_inds, :], dataset.target[trn_sub_inds]
    return ((data_train, label_train), (data_test, label_test))
</code></pre>

<p>The Error: </p>

<blockquote>
  <p>tst_sub_inds = random.choice(range(num_samples), test_set_sz, False)
  TypeError: choice() takes 2 positional arguments but 4 were given
  Blockquote</p>
</blockquote>

<p>What is the problem? Maybe it due to an old version of python?</p>

<p>Thanks, 
Eli</p>