How can I group by two columns interchangeably? For example, if I have this table and I want to get However, I get this instead when I use The entries (rows) that have the same names but exchanged are considered to be new entries, but i want to treat them the same way, can you please tell me a way
how to make a temporary object from withing the class function in python?
I’m writing this code and there is a need to send objects as parameters in functions. My problem is one of the objects needs to be resued with its original values but as I need to return an object from the functions. I don’t know how I can send the answer and keep the original values in the object…
Combining two lists randomly
Hey guys I’m trying to combine these two lists into one dictionary. However, on the second for loop it just keeps going through that and not going back to the first. Any help would be really appreciated. Thank you! Answer in your code, the for key in emails: part needed to be removed. it would choose th…
Can i have too many features in a logistic regression?
I’m building a model to predict pedestrian casualties on the streets of New York, from a data set of 1.7 million records. I decided to build dummy features out of the ON STREET NAME column, to see what predictive power that might provide. With that, I have approximately 7500 features. I tried running th…
Getting the max and min from a dictionary without using max() and min()
I have a dictionary with two values (id and amount): and I want to find the id with the max and min amount from the dictionary without using the max and min functions. So desired output is: Answer You could just calculate it with a for loop: If your values are lists, you need to chose what index to use
Flask-Admin inline-editable list dropdown menu squished (can’t see menu items)
A picture is worth a thousand words. Here’s what I’m trying to fix in Flask-Admin: I’m trying to edit a field from the list view by including the field in the column_editable_list of the model view. The field’s values come from another table via a foreign key relationship, so the user …
Using list comprehensions, write a script that subtracts a list’s element from list to list
I am trying to subtract elements from a list in a list of lists using list comprehension. I want to achieve something like: So it is an element to element subtraction but either get errors because most of my numbers are floats or I get something like: I don’t know if that makes sense? Answer Here it is:
Writing One Shell script to first enter nix shell, then enter the python virtual environment
I want to schedule a job from wsl. The job will need to be run in the nix-shell and then in the python virtual environment under Nix-shell. I try to do this by writing a shell script, run ./enter.sh. However, it doesn’t enter the after I run ./enter.sh. I need to first run the first line, then run the s…
How to create a matrix of lists?
I need to create a matrix MxN where every element of the matrix is a list of integers. I need a list so that I can append new elements as I go, therefore a 3D matrix would not work here. I’m not sure if what I need here would actually be a list of lists. Answer The following function creates
__init__.py needed for imports to work in Pytest. But using Python 3.8
I have read that after Python 3.3, __init__.py is not required anymore, So I am not understanding why I need to add it (__init__.py) for my pytests to work. Directory structure: In /foo/bar.py I have the following code In test_bar.py I have the following code I run the tests from /root like this: If I place a…