title: Install labelme annotation tools
body: <p>I tried to install <code>labelme</code> annotation tools on Mac os 10.11.x from this link <a href="https://pypi.python.org/pypi/labelme/2.8.0" rel="nofollow noreferrer">labelme</a> using the virtual environment method listed below:</p>
  
  <pre><code># python3
  conda create --name=labelme python=3.6
  source activate labelme
  # conda install pyqt
  pip3 install pyqt5 # pyqt5 can be installed via pip on python3
  pip3 install labelme
  </code></pre>
  
  <p>When I run labelme on terminal I get this error:</p>
  
  <pre><code>File "/Users/xxx/anaconda3/lib/python3.6/site-packages/labelme/app.py", line 32, in &lt;module&gt;
  
  from PyQt5.QtGui import *
  
  ImportError: dlopen(/usr/local/lib/python2.7/site-packages/PyQt5/QtGui.so, 2): 
  Symbol not found: _PyInt_AsLong
  
  Referenced from: /usr/local/lib/python2.7/site-packages/PyQt5/QtGui.so
  Expected in: flat namespace in /usr/local/lib/python2.7/site-packages/PyQt5/QtGui.so
  </code></pre>
  
  <p>During handling of the above exception, another exception occurred:</p>
  
  <pre><code>Traceback (most recent call last):
  File "/Users/xxxx/anaconda3/bin/labelme", line 7, in &lt;module&gt;
  from labelme.app import main
  File "/Users/rafikgouiaa/anaconda3/lib/python3.6/site-packages/labelme/app.py", line 37, in &lt;module&gt;
  
  from PyQt4.QtGui import *
  ModuleNotFoundError: No module named 'PyQt4'**
  </code></pre>
  
  <p>It seems that <code>labelme</code> looks for <code>pyqt5</code> in Python 2.7, not in Python 3.6 where <code>pyqt5</code> is installed.</p>
  
  <p>Any help for installing labelme or any other tools other than labelme and Matlab tools?</p>