title: Why do I get NameError: name 'train_test_split' is not defined?
body: <p>I've been following this tutorial I found online about speech analysis in Deep Learning, it kept giving me the nameerror. i'm quite new to python, so I'm not sure on how to define it. But then train_test_split is a method by default to split the data, train_test_split is imported.</p>
  <p>Here is the code:</p>
  <p>'''</p>
  <pre><code>import numpy as np
  import pandas as pd 
  import os
  import seaborn as sns
  import matplotlib.pyplot as plt
  import seaborn as sns
  plt.style.use('fivethirtyeight')
  from tqdm import tqdm
  print(os.listdir(&quot;../input&quot;))
  
  from keras import Sequential
  from keras import optimizers
  from keras.preprocessing.sequence import pad_sequences
  from keras.models import Sequential,Model
  from keras.layers import LSTM, Dense, Bidirectional, Input,Dropout,BatchNormalization,CuDNNLSTM, GRU, CuDNNGRU, Embedding, GlobalMaxPooling1D, GlobalAveragePooling1D, Flatten
  from keras import backend as K
  from keras.engine.topology import Layer
  from keras import initializers, regularizers, constraints
  from sklearn.model_selection import KFold, cross_val_score, train_test_split
  
  train = pd.read_json('C:/Users/User/Downloads/dont-call-me-turkey/train.json')
  display(train.shape)
  
  train.head()
  
  train_train, train_val = train_test_split(train, random_state = 42)
  xtrain = [k for k in train_train['audio_embedding']]
  ytrain = train_train['is_turkey'].values
  xval = [k for k in train_val['audio_embedding']]
  yval = train_val['is_turkey'].values '''
  </code></pre>
  <p>it gave an error:</p>
  <pre><code>NameError                                 Traceback (most recent call last)
  &lt;ipython-input-19-1e07851e6519&gt; in &lt;module&gt;
  ----&gt; 1 train_train, train_val = train_test_split(train, random_state = 42)
        2 xtrain = [k for k in train_train['audio_embedding']]
        3 ytrain = train_train['is_turkey'].values
        4 xval = [k for k in train_val['audio_embedding']]
        5 yval = train_val['is_turkey'].values
  
  NameError: name 'train_test_split' is not defined
  </code></pre>