Select 50 items from list at random
I have a function which reads a list of items from a file. How can I select only 50 items from the list randomly to write to another file?
python
How to update matplotlib’s imshow() window interactively?
I’m working on some computer vision algorithm and I’d like to show how a numpy array changes in each step.
Sort nested dictionary by value, and remainder by another value, in Python
Consider this dictionary format.
Custom ordering in Django
How do you define a specific ordering in Django QuerySets?
Automatically Rescale ylim and xlim in Matplotlib
I’m plotting data in Python using matplotlib. I am updating the data of the plot based upon some calculations and want the ylim and xlim to be rescaled automatically. Instead what happens is the scale is set based upon the limits of the initial plot. A MWE is
Displaying a webcam feed using OpenCV and Python
I have been trying to create a simple program with Python which uses OpenCV to get a video feed from my webcam and display it on the screen.
Immutable numpy array?
Is there a simple way to create an immutable NumPy array?
Missing data, insert rows in Pandas and fill with NAN
I’m new to Python and Pandas so there might be a simple solution which I don’t see.
Python multiprocessing: Permission denied
I’m getting an error when trying to execute python program that uses multiprocessing package: