billiard | Multiprocessing Pool Extensions | Authentication library

I'm trying to install pyodbc on Django to access Sql Server but the Docker image had no be built.

The Dockerfile:

Question: How do I get the location of a point after rotation?

Goal: I want to create a triangle given two angles. The user can manipulate two angles (a0,b0) and the program will determine the third vertex based on the intersection of the two sides.

Explanation: To find the point of intersection of the two sides, I need four points: the endpoints for l1 and l2. To keep track of the points, I created vertices=[]. But the array doesn't update the location of the points after the user rotates the sides and changes (a0,b0).

Thus, when I retrieve my points, two of them are in their initialized position, and have not been updated after the user rotates the sides. I've searched for this problem online, but to no avail. Any help is appreciated.

MWE:

So I'm trying to make function for preprocessing dataaset in semantic segmentation. but it tells me that my function is not define. Whereas is actually define on there. my code is like this

I am trying to scrape a German Billiard League website for results, to tabulate and submit to a rating system that requires a certain format. I am no python expert, but I have muddled through how to pull a complete list of links from the root League page, and to get Date, Home/Visitor teams, and now I am trying to capture individual match data.

Here is the relevant HTML:

I am getting the below error after I deployed my website on heroku.

So basically I'm making a pool game (sort of) on c++. I'm still thinking about the theory and how exactly to make it before I start coding and I'm a bit stuck. So the ball starting coordinates are given and also an input is given on how much power is going into the shot and the direction of the shot with coordinates.

Example:

I am trying to find the vector or angle in order to calculate the points where two "thick" lines would intersect. The end goal is to draw simple flat planes for a thick line renderer.

Although I'm using Unity and am working with Vector3, for my purposes, assume the Z-value is always 0. This is a 2d problem. It is not a Unity specific problem and I'm not sure why I'm having a hard time finding a solution that I can understand. Getting points for drawing a "thick" line is surely not new. But for the life of me, I can't find a solution.

The closest I've come is figuring out points along the line perpendicular to the one I want. I know that this is the "bounce" line. In other words, with 3 points, I can get the vector for the line that represents the side of a billiard ball table assuming the middle point is the point of impact with the side of the table. What I want is the vector perpendicular to that side. I worked out the code below according to the post here: https://answers.unity.com/questions/1503945/how-to-get-the-cross-direction-for-3-points.html However, it's not working and I don't understand matrix math or Vector API's enough to figure out how to rotate my points, etc. My math, vector, and trigonometry skills are just not up to this challenge.

I've included an image from in Unity showing what I can get. You can see the blue line which is so close to what I want. I can get points C1 and C2 that are an arbitrary distance (thickness) out from the point of impact. They just need to be rotated 90 degrees to give me D1 and D2. Then I can get the points to use in the drawing api.

The second image illustrates the actual information I'm trying to get. If I can just get the points, I can work on the custom mesh rendering myself.

The code below should be ready to display instantly once added to an empty GameObject in Unity in case that helps.

Maybe I'm trying to do this all wrong and need to instead start with two parallel lines set "thickness" apart from the points comprising the line and calculate the intersect points of those? Any feedback, not to mention an actual solution, would be greatly appreciated.

Whenever I am trying to save an object to my DB, I keep getting the error Column 'created_at' cannot be null.

Here is my audit model:

I’ve been developing a dash app that uses a long_callback, and for development I’ve been using a diskcache backend for my long_callback_manager, as recommended by the guide I found here: https://dash.plotly.com/long-callbacks

When I tried running my app using gunicorn, it failed to start because of something apparently wrong with diskcache. As such, I decided to switch to a celery/redis backend since that’s recommended for production anyway.

I got a redis server running (responds properly to redis-cli ping with PONG), and then started the app again. This time it started up fine, and all of the normal callbacks work, but the long_callback does not work.

Details:

• The page more or less hangs, with the page title flashing between the normal title and the Updating... title, indicating that the app thinks it’s “waiting” for a response/update from the long_callback.
• The values set by the running argument of the long_callback are set to their starting value, indicating that the app recognizes that the long_callback ought to run.
• By placing a print statement as the first line within the long_callback function and seeing that it does not print, I’ve determined that the function never starts.
• The failure happens both with gunicorn and without gunicorn.

These details all point to the problem being the celery/redis backend. No errors are shown, neither on the client/browser nor on the server’s stdout/sterr.

How do I get a celery/redis backend working?

UPDATE: After realizing that the __name__ variable is being used and that its value changes depending on the file from which it is referenced, I've also tried moving the code which creates celery_app and LONG_CALLBACK_MANAGER into app.py, to no avail. The exact same thing happens.