mac下安装labelImg出现ModuleNotFoundError: No module named 'sip'

配置如下

macos 10.12

python 3.6

tensorflow 2.1

在终端安装好了（默认是）最新版本的sip和pyqt5后调用labelImg报错如下

(tensorflow) 123deiMac:Downloads a123$ labelImg
Traceback (most recent call last):
  File "/Applications/anaconda3/envs/tensorflow/lib/python3.6/site-packages/labelImg/labelImg.py", line 15, in <module>
    from PyQt5.QtGui import *
ImportError: dlopen(/Applications/anaconda3/envs/tensorflow/lib/python3.6/site-packages/PyQt5/QtGui.abi3.so, 2): Symbol not found: _futimens
  Referenced from: /Applications/anaconda3/envs/tensorflow/lib/python3.6/site-packages/PyQt5/Qt/lib/QtCore.framework/Versions/5/QtCore (which was built for Mac OS X 10.13)
  Expected in: /usr/lib/libSystem.B.dylib
 in /Applications/anaconda3/envs/tensorflow/lib/python3.6/site-packages/PyQt5/Qt/lib/QtCore.framework/Versions/5/QtCore

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/Applications/anaconda3/envs/tensorflow/bin/labelImg", line 5, in <module>
    from labelImg.labelImg import main
  File "/Applications/anaconda3/envs/tensorflow/lib/python3.6/site-packages/labelImg/labelImg.py", line 24, in <module>
    import sip
ModuleNotFoundError: No module named 'sip'

在网上查询后估计是pyqt5与sip版本不匹配

先卸载sip和pyqt5

pip uninstall sip pyqt5 -y

再装上4.19.8的sip和5.12.1的PyQt5

pip install sip==4.19.8 -i http://pypi.douban.com/simple/ --trusted-host pypi.douban.com
pip install PyQt5==5.12.1 -i http://pypi.douban.com/simple/ --trusted-host pypi.douban.com