J_yang questions

• PyQt, How to change BoxLayout's weight (size)
• OpenCV Trackbar, how to display max, min and current value on trackbar window
• Python, How to pass function to a class method as argument
• How to subset Numpy array with exclusion
• OpenCV - Adjusting photo with skew angle (tilt)
• How to add the second line of labels for axes
• Python, Matplotlib, Scatter plot, Change color on the clicked point
• ipywidgets, how to change slider's value display precision
• tmux recognised Conda env but still use the default python
• OpenCV return keypoints coordinates and area from blob detection, Python

J_yang answers