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Tag: python

Django – fresh database and no such table

I’m using my complex jobs app in production and it works fine, with sqlite database. I’m trying to create new database from scratch and I cannot do that nor using migrations nor trying to make them once again: When I’m trying to reuse my migrations: When I’ve tried to remove all migrat…

Python: how to get Windows desktop background color

Context: on my office PC there is apllied corporate policy -> standard company picture on desktop wallpaper. Picture is too bright; I switch it off to more dark backgroubd color, do it by manually running the script several times per day. Aim: automate this operation with Python once per some time check so…

Replicate a function from pandas into pyspark

I am trying to execute the same function on a spark dataframe rather than pandas. Answer A direct translation would require you to do multiple collect for each column calculation. I suggest you do all calculations for columns in the dataframe as a single row and then collect that row. Here’s an example.…

Group by the column in df python

I have a simple df. It has two columns. I want to groupby the values based on column a. Here is a simple example: Any input would be greatly appreciated! Desired output is: df Answer Here’s a way to do what you want. First you want to group by column ‘a’. Normally groupby is used to calculat…