web_develop | Source code in the book & quot ; Python Web Development | Reactive Programming library

I am training a linear regression model predicting salary from company size (company_size_number) and country (country) using the StackOverflow data.

What I perform is:

1. Read the data. Split the data into a training set (75%) and a test set (25%).
2. Create a recipe that converts company_size_number into a factor variable and then transforms the two predictors into dummy variables.
3. Create the model specification.
4. Create a workflow object and add the recipe and model specification to it, then fit the model on the training set.
5. Calculate R² on the test set.

This is my code

Why is my text not being centered when i am using the margin to center it(IT WORKS WHEN I USE - text-align : center) :

here is the code and the screenshot :

whenever I reload my website I get this error:

I read in Django document that a blank database will be created for testing. I am new to Django so I barely changed anything in setting.py and currently using Sqlite database. However, when I run python manage.py test, Django keep telling the user has been existed, so I tried changing the username for the created users in TestCase, run the test again and found out that the new users are created in the existing database. The test file is as bellow:

Just wondering if anyone knows of anything to similar to clicking a feature (point) on an OpenLayers Map and it triggering a small pop-up form for completion?

I've found this in regards to adding text labels, but I don't want my label to appear... https://subscription.packtpub.com/book/web_development/9781785287756/3/ch03lvl1sec34/adding-text-labels-to-geometry-points

Realistically, I want an illusion for the user to have interactivity with a contact page map. They can draw a point on the map (this code is complete), but now I'd like to offer them the opportunity to click that point they've just drawn and add text in a pop-up - is this possible?

https://www.w3schools.com/howto/tryit.asp?filename=tryhow_js_popup_form - essentially this type of form but after the point has been drawn

So, I was quite happily debugging my PHP code with PhpStorm - until Windows became severely corrupted ... and my backup regime turned out to not quite as good as I had thought (let that be a lesson to many of us :-( )

Here's the relevant part of my php.ini:

I picked up a 4 year old project written in Ruby 2.1.3 and Rails 4.1.8.

Very few of the gems were versioned but I've managed to get the project running locally by installing mysql2 0.3.20 as suggested in multiple other threads. Doing this required me to (on MacOS) downgrade openssl and mysql with brew install mysql@57 and brew install openssl@10.

I could then install mysql2 with by passing the correct libraries to it: gem install mysql2 -v 0.3.20 -- --with-mysql-config=/usr/local/opt/mysql@5.7/bin/mysql_config --with-ldflags=-L/usr/local/opt/openssl@1.0/lib --with-cppflags=-I/usr/local/opt/openssl@1.0/include

Everything works locally, all good.

I'm trying to deploy this project with Dokku on a Debian instance. Here's the readout from the push to dokku master including the error thrown when starting the Rails server:

I am trying to fill the text in the grids such that it is readable on all kinds of devices. I also want the text to be center aligned (vertically and horizontally).

HTML: