I have been using anaconda for a while, and its Python executable is located at /Users/ufo/opt/anaconda3/bin/python. I have tried to create an environment with conda, and the new environment would use copy this Python to environment’s bin. However, with current Anaconda versation, the new environment wi…
Sampling from video frames and save them as an image – python openCV
I have a video file, I know how to save all of the frames,but my question is how to save only one frame of every 20 frames as an image? Thanks. Answer This is based on this tutorial: https://theailearner.com/2018/10/15/extracting-and-saving-video-frames-using-opencv-python/
psycopg2.IntegrityError: duplicate key value violates unique constraint DETAIL: Key (id)=(19) already exists
I am not setting the primary key manually. How could this be happening? In my 5 years of programming in Django I’ve never gotten this error. I can’t tell what is going wrong by just looking at my code and the traceback. What could be wrong? Let me know if I need to post more code. Thanks in advanc…
Is there a way to make a object follow another object?
So, I have been working on a project for a very basic Space Invaders. But, I can’t seem to get the Bullet (see code) class to follow the Jet class(see code): I have already searched some websites (and yours, too) and couldn’t find anything. Do I have any way to make the classes follow each other? …
Converting Unix timestamp to timestamp including the local time of a certain timezone
I have following code: First line runs but when I try to set the new timestamp as a local time for that timezone I get an error as – **to_datetime() got an unexpected keyword argument ‘tz’** Thanks Answer or alternatively
Creating overlapping, square patches for rectangular images
Given be a rectangular image img and patch s. Now I would like to cover the whole image with square patches of side length s, so that every pixel in img is in at least one patch using the minimal number of patches. Furthermore I want neighboured patches to have as little overlap as possible. Thus far: I have …
How to avoid name collisions in python decorators functions
I would like to write a python decorator so that a function raising an exception will be run again until either it succeeds, or it reaches the maximum number of attempts before giving up. Like so : My problem is that I want a guarantee that no matter what names the kwargs contain, there cannot be a collision …
Time Series Plot Seaborn with MultiIndex
I have the following dataset: The dataset spans three months and counts the occurrence of five codes per day. In order to plot the data I have just used the following code: I am wondering though, how this can be done using seaborn and a lineplot ? Answer Is this what you are looking for?
Why won’t Tkinter executable capture key combinations?
I’m building an tkinter app on Python 3.7 and creating an .exe with Pyinstaller 3.5 in Windoows 10. When running the code from the IDE, all intended keyboard commands work as expected. However, in the executable, key combinations do not work while single key presses are fine. Here is some test code that…
Output Common Elements of Two Lists using Sets
I’d like to write a function definition that takes two lists and returns a single set with the values that each list has in common. Formally, here are some assertions I’d like to pass: Here’s the code I’m having trouble with: I receive an error output that I know has to do with strings…