I want to let the user upload multiple images per post. Similarly to an e-commerce platform with multiple images per product. But till now the images are not sent to the database. That’s my code so far: models.py: forms.py: views.py: project_form.html: settings.py: project urls.py app urls.py Answer Iss…
Tag: python
Why is the printing order reversed in a simple loop built inside a function(Python) [closed]
Closed. This question is not reproducible or was caused by typos. It is not currently accepting answers. This question was caused by a typo or a problem that can no longer be reproduced. While similar questions may be on-topic here, this one was resolved in a way less likely to help future readers. Closed 9 m…
Non overlapping random shapes on 2D plane
Objective: I want to create random non-overlapping irregular rounded shapes (contours) on a 2D plane, similar to a sandstone microstructure as shown below, to perform an oil flooding experiment using computer vision. Approach: I have previously done a similar thing but with circular shapes instead of random s…
SqlAlchemy db.Enum: How to detect it and retrieve the values
I have a function to add a column to a model: I use it like: I call the col function for various columns. I would like to put the last line inside this function and it can be called on Enum type and fill the choices something like: However, it gives the error: Answer The first issue I’m seeing in
Adding and saving to list in external json file
I’m very new to Python and I’m struggling when it comes to saving the data that the user has entered to a json file when quitting the application. Also every time I run my code all the data inside the json file is wiped. When I enter the input to save and exit I get this error code: Here is
How to resolve “NoReverseMatch” Error in Django?
So I’m trying to create a table of hosts, and as one of the fields of that table include a clickable link to an update page. Which will pass the host_id to the update page. I was hoping someone could tell me what I’m doing wrong with regards to passing the correct parameter to upate/<host_id>…
Is there a more efficient way to write code for bin values in Databricks SQL?
I am using Databricks SQL, and want to understand if I can make my code lighter: Instead of writing each line, is there a cool way to state that all of these columns starting with “age_” need to be null in 1 or 2 lines of code? Answer If each bin is a column then you probably are going to
using map/reduce on lists of lists
I have a very large list of lists, and I want to use map/reduce techniques (in Python/PySpark), in an efficient way, to calculate the PageRank of the network made of the elements in the list of lists that sharing a list means a link between them. I have no clue how to deal with the elements in the lists becau…
Is it a good idea to use JWT as verification token?
I’m going to use FastAPI Users for my application. I saw that it generates JWT tokens to perform verification processes in the application. For example, in order to verify user email address or to request password change. Is it a good idea in terms of security? Answer JWT is state-less authentication an…
Pandas apply function to each row by calculating multiple columns
I have been stacked by an easy question, and my question title might be inappropriate. I want to calculate (df.amount * df.con)/df.groupby(‘name’).agg({‘amount’:’sum’}).reset_index().loc(df.name==i).amount) (Sorry, this line will return error, but what I want is to calculat…