sklearn is not sklearn If you came across complaint no module named sklearn and you are sure that you “installed” that with pip install sklearn. Sorry, sklearn is scikit-learn instead of sklearn. pip install scikit-learn should solve the problem. Dropbox is syncing all files except some Check if you own the file. It maybe belong…
A simple hack to import a module from another folder import sys # caution: path[0] is reserved for script path (or ” in REPL) sys.path.insert(1, ‘/path/to/application/app/folder’) import file
This is a very misleading and weird error. When running aws configure in ubuntu 20.04. If I copied and pasted the key id and secret to the terminal, it appends something like ^[[200~ and ^[[201~ before and after the copied key and secret. I was not aware of what that was then but it seems…
Google passwords failed me again. I got “can’t load this page” error. I didn’t know that password is also saved in chrome. One can retrieve that at setting->autofill
I tried to use Qt designer, and I don’t see how I can rename a slot in the designer. It turns out that it will try to “connect by the name” directly. It is quite obscure. And here is a bit of explanation.
Somehow using installing ros seems to screw up PKG_CONFIG_PATH and it returns only /opt/ros/noetic/lib/pkgconfig And if I try gst-inspect-1.0 It will return almost nothing. Manage to find the path back with pkg-config –variable pc_path pkg-config So adding export PKG_CONFIG_PATH=`pkg-config –variable pc_path pkg-config`:$PKG_CONFIG_PATH to .bashrc will do the trick. Now gst-launch-1.0 playbin uri=file:///path/to/video will play video…
Stop an instance and detach the volume Attach the volume to another instance Mount the volume with commands below sudo mkdir -m 000 /vol sudo mount /dev/xvdf1 /vol -t ext4
Played a little bit of Bricklink Studio. I have to say that it is a very nice app. Unfortunately, it only works natively in Windows and Macs. I tried to use VirtualBox with it. But it is painfully slow. And adding more core doesn’t help. I have an 8-core laptop and adding 4 cores doesn’t…
I was following turtlebot tutorial but it can’t find the package somehow. source ~/catkin_ws/devel/setup.bash does not solve the problem. But it turns out starting fresh by creating a new workspace seems to resolve the problem.
Motion is great simple software for surveillance application. And it can be easily install in Ubuntu with apt install. It is a command line based software. It doesn’t have some fancy GUI, but the setup is quite easy. The default config file is stored as /etc/motion/motion.conf. One would like to create a .motion directory in…