So, I have the following data frame. I want to combine the values from those two columns into one separated by an underscore. I don’t want to have underscores in column with nan values. So far I have tried this. But the result is unsatisfying. I don’t want the trailing underscore for column withou…
How to add column name for index in Pandas dataframe
This is about Pandas dataframe. I have a dataframe made by following python code. There is no column name for index. What I’d like to do is adding index’s name like ‘date’ in attached capture. I did following, but error occurred because there is no such name of column in df_test. I kno…
Creating a Asteroid type game, problem is when player waits to press play button many asteroids spawn instead of controlled amount
About 500 lines of code, so to make it easier to read I believe the bug comes from _update_asteroids(self) function. Simply put, when the user is in the paused game state and must press play, if the player decides to wait lets say a minute. A minutes worth of asteroids will spawn at the exact same time. I bel…
Send document to telegram bot using python-telegram-bot Package
I am try to build a telegram bot using python with python-telegram-bot Package and its working with text commands now i try to send a document to user my code like but it show a error like return update.message.download(open(‘cv.pdf’, ‘rb’)) AttributeError: ‘Message’ object…
Over and under sample multi-class training examples (rows) in a pandas dataframe to specified values
I would like to make a multi-class pandas dataframe more balanced for training. A simplified version of my training set looks as follows: Imbalanced dataframe: counts for class 0, 1 and 2 are respectively 7, 3 and 1 I made this with the code: Now I would like to randomly under sample the majority class(es) an…
How to navigate to different directory in Jupyter Lab?
I tried the answers in How to navigate to a different directory in Jupyter Notebook?, but they didn’t work for various reasons: Some answers are “how to permanently change your Jupyter start-up folder” which I don’t want to do. I already did this, I set my start-up folder and I like it…
How to run Airflow tasks synchronously
I have an airflow comprising of 2-3 steps PythonOperator –> It runs the query on AWS Athena and stores the generated file on specific s3 path BashOperator –> Increments the airflow variable for tracking BashOperator –> It takes the output(response) of task1 and and run some code on …
How to download PDF files with Playwright? (Python)
I’m trying to automate the download of a PDF file using Playwright, I’ve the code working with Selenium, but some features in Playwright got my attention. The real problem the documentation isn’t helpful. When I click on download I get this: And I cant change the directory of the download, i…
Reflecting 4d symmetric data
I’ve found out that there is no example of how to reflect symmetric 4d data, which can be very useful when 3d simulations wants to be performed using a symmetric plane to reduce calculations(e.g. ANSYS, COMSOL, etc). This example shows a data file structure corresponding to a COMSOL simulation, which ha…
How to invoke a specific shell with python?
I want to invoke a specific command shell in python to execute some scripts. For exemple, in R, I use: system2(os_shell = “C:/Program Files (x86)/pgAdmin III/1.18/pg_dump.exe”, args = “very long argument”) Thanks to this code, I can backup my Postgresql’s tables with a for loop. …