I am trying to port https://github.com/sugarlabs/arithmetic to GTk3 but when i run the activity to understand the working(with GTK) it throws an error "no module named sugar.activity.activity".I searched google for any potential solutions but could not find anything .
Traceback (most recent call last): File "/usr/bin/sugar-activity", line 219, in <module> main() File "/usr/bin/sugar-activity", line 214, in main instance = create_activity_instance(activity_constructor, activity_handle) File "/usr/bin/sugar-activity", line 48, in create_activity_instance activity = constructor(handle) File "/usr/share/sugar/activities/compress-activity.activity/Compress.py", line 42, in _init_ canvas = PyApp() File "/usr/share/sugar/activities/compress-activity.activity/CompressCanvas3.py", line 504, in _init_ if Gdk.Screen.width() >= 1200: NameError: global name 'Gdk' is not defined Exited with status 1, pid 1692 data (<open file '<fdopen>', mode 'w' at 0x7f0fd82a3ae0>, 'f5b6d864dcbea56c6345d8d0394716abe77d46e7') I setup my development environment by following https://github.com/sugarlabs/sugar/blob/master/docs/ubuntu.md and I am working on ubuntu 18.04.
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