python3中启动 uiautomator2viewer时报错解决办法

事先说明：我电脑里同时了安装了 python2和python3，启动对应版本时分别带上版本号，如何设置共存请参考：python2与python3共存

打开命令窗口，启动weditor : python3 -m weditor，报如下错误：

 C:\Windows\system32>python3 -m weditor

 Traceback (most recent call last):

   File "C:\Program Files\Python37\lib\runpy.py", line 193, in _run_module_as_main

     "__main__", mod_spec)

   File "C:\Program Files\Python37\lib\runpy.py", line 85, in _run_code

     exec(code, run_globals)

   File "C:\Program Files\Python37\lib\site-packages\weditor\__main__.py", line 19, in <module>

     import StringIO

 ModuleNotFoundError: No module named 'StringIO'

查阅了一下别人博客说明，在Python3中没有直接通过 import StringIO的方法（在python2中使用），正确的使用方法为 from io import StringIO,根据上面错误输出中的解决办法，到 C:\Program Files\Python37\Lib\site-packages\weditor 将 “__main__.py” 文件中第19行修改为 from io import StringIO (我是重新新增一行，把原语句注释掉）

再次运行 Python3 -m weditor 时，还是报错，不过是报另外一个错，说明上面的问题已经解决，下面来看看第二个错是什么样的，提示没有 cv2模块

 C:\Windows\system32>python3 -m weditor

 Traceback (most recent call last):

   File "C:\Program Files\Python37\lib\runpy.py", line 193, in _run_module_as_main

     "__main__", mod_spec)

   File "C:\Program Files\Python37\lib\runpy.py", line 85, in _run_code

     exec(code, run_globals)

   File "C:\Program Files\Python37\lib\site-packages\weditor\__main__.py", line 24, in <module>

     import atx

   File "C:\Program Files\Python37\lib\site-packages\atx\__init__.py", line 22, in <module>

     from atx.drivers import Pattern, Bounds, ImageCrop

   File "C:\Program Files\Python37\lib\site-packages\atx\drivers\__init__.py", line 9, in <module>

     from atx import imutils

   File "C:\Program Files\Python37\lib\site-packages\atx\imutils.py", line 16, in <module>

     import cv2

 ModuleNotFoundError: No module named 'cv2'

那就再安装 cv2模块，不过这个模块的安装方法跟其它模块有点不一样，不能直接通过名字的形式去猜测安装方法，一般人都是直接 pip3 install cv2，结果会发现这个行不通，通过查阅其它人博客，该cv2 模块的正确安装方法是 pip3 install opencv-python

 C:\Windows\system32>pip3 install opencv-python

 Collecting opencv-python

   Downloading https://files.pythonhosted.org/packages/82/de/32bdf7b20f9d08008dda2073a48141ab4ad829deaca7aa660e9c64d02dae/opencv_python-3.4.3.18-cp37-cp37m-win_amd64.whl (33.8MB)

     100% |████████████████████████████████| 33.8MB 280kB/s

 Requirement already satisfied: numpy>=1.14.5 in c:\program files\python37\lib\site-packages (from opencv-python) (1.15.1)

 Installing collected packages: opencv-python

 Successfully installed opencv-python-3.4.3.18

再次启动 python3 -m weditor，网页版的 uiautomatorviewer 正常打开

 C:\Windows\system32>python3 -m weditor

 listen port 17310

 [I 180910 10:29:11 web:2162] 304 GET /api/v1/version (::1) 0.00ms

 [I 180910 10:29:15 web:2162] 200 POST /api/v1/connect (::1) 828.14ms

 SN 55115076-099d-4f9c-b11a-8ada31375c5e

 [I 180910 10:29:29 web:2162] 200 GET /api/v1/devices/55115076-099d-4f9c-b11a-8ada31375c5e/screenshot (::1) 1092.94ms

 [I 180910 10:29:30 web:2162] 200 GET /api/v1/devices/55115076-099d-4f9c-b11a-8ada31375c5e/hierarchy (::1) 724.49ms

巴特西

python3中启动 uiautomator2viewer时报错解决办法

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