I would like do a one to many mapping with the following list and mapping dictonary: This is my dataframe: When I do the mapping as follows: The problem is that I want to do a one to many mapping and I don’t capture the relationship. The desired outcome would be something like this. Which creates a new …
Tag: python
TypeScript vs. Python typing default arguments and autocompletion
In TypeScript I used to have the following and it will work as type inference: The above example should give you options and autocompletion when typing, and error when you type options that are not in the list of options. When I was exploring Python I found the typing module. But what I tried didn’t wor…
How to set minimum and maximum length of a string argument?
I have this so far: But it gives me this error: How do I make it so that the min and max length of the username argument is 3 and 22. Answer I was able to accomplish this by using app_commands.Range.
Django – CRUD functionality, Edit Profile Details
I am new to Django but I am creating a Realtor application, I would like the user to be able to update their details using CRUD functionality in the UI. But I can’t get my request to work: Heres is my code (views.py): Then here is (urls.py) ] Lastly, here is my code snippet from the requested link in th…
Why is my round function not working when I have a float in Python? I tried many methods online, but none work [closed]
Closed. This question needs to be more focused. It is not currently accepting answers. Want to improve this question? Update the question so it focuses on one problem only by editing this post. Closed 2 months ago. Improve this question I was working on a project where I could find out a users balance with a …
List comprehension in keras custom loss function
I want to make my custom loss function. First, the model’s output shape is (None, 7, 3). So I want split the output to 3 lists. But I got an error as follows: I think upper_b_true = [m[0] for m in y_true] is not supported. I don’t know how to address this problem. I tried to execute it while parti…
How to find the global minima from a matplotlib graph?
I have two arrays x and y. Here I’ve plotted them using Matplotlib and found the global minima using this simple logic. Here is the output that I’m getting: After that I’ve smoothen the graph BSpline Now my position of the global minima has changed and that simple logic will not work here. I…
Formulating the constraint x[i+1]<= x[i] in Pyomo
I have my decision variable x which is indexed on the list N. I want the constraint that x[i+1] <= x[i] or x[i] <= x[i-1]. But how do I do this in Pyomo without going out of range with my index? This thus doesn’t work. Anyone an idea how to do this? Answer You could use Constraint.Skip to avoid ac…
Beautifulsoup/Writer returns an empty cell when exported to a CSV
I’m scraping a website to get the name, birth + death dates, and the name of the cemetery someone is buried in. For the most part, it is working quite well; however, when I exported the text to a CSV, I noticed that there’s a blank cell inserted in the name column after each page. I have a feeling…
New pandas DataFrame column from datetime calculation
I am trying to calculate the number of days that have elapsed since the launch of a marketing campaign. I have one row per date for each marketing campaign in my DataFrame (df) and all dates start from the same day (though there is not a data point for each day for each campaign). In column ‘b’ I …