title: No module named 'classification'
body: <p>python3 version 3.6.9
  tensorflow version 1.14.0
  Ubuntu 18.04.4</p>
  
  <p>I am currently trying the tutorial of Coral Dev Board on retraining a classification with weight imprinting. (<a href="https://coral.ai/docs/edgetpu/retrain-classification-ondevice/" rel="nofollow noreferrer">https://coral.ai/docs/edgetpu/retrain-classification-ondevice/</a> ) After reaching Step 3 of "Pre-train the model", I tried to modify to train which suit my directory.</p>
  
  <pre><code>python3 mobilenet_v1_l2norm_train.py \
  --quantize=True \
  --dataset_dir=/home/edgetpu/img_classify/flowers \
  --fine_tune_checkpoint=/home/edgetpu/img_classify/train/model.ckpt-300 \
  --checkpoint_dir=/home/edgetpu/l2norm-training \
  --freeze_base_model=True \
  --number_of_steps=100000 
  </code></pre>
  
  <p>However, even if I try to add <code>--classification=/usr/lib/python3/dist-packages/edgetpu/classification</code> at the end of code, I still got </p>
  
  <pre><code>ModuleNotFoundError: No module named 'classification'
  </code></pre>
  
  <p>I have no idea where the classification module is. <code>pip install classification</code> and trying training directly on board also do not work. Please help.</p>