I’m trying to create a todo list as part of an application that is used to prompt a user what they must complete before the application is assessed. To achieve this I have created a TaskList model and a Task model belonging to a TaskList. When I create a new TaskList instance (on a new application) I wa…
Tag: python
Efficient chaining of boolean indexers in pandas DataFrames
I am trying to very efficiently chain a variable amount of boolean pandas Series, to be used as a filter on a DataFrame through boolean indexing. Normally when dealing with multiple boolean conditions, one chains them like this but this becomes a problem with a variable amount of conditions. I have tried out …
Column with column names for nulls in row
I want to add new column “Null_Values” in PySpark dataframe as below Answer or
Appending row to dataframe with concat()
I have defined an empty data frame with and want to append rows in a for loop like this: But I get this error If I use df = df.append(row, ignore_index=True), it works but it seems that append is deprecated. So, I want to use concat(). How can I fix that? Answer You can transform your dict in pandas DataFrame
Defining docstring raises for functions not explicitly raising exception
The above function is not explicitly raising any exception, but as can be seen, its execution can potentially raise KeyError and HTTPError. Is it fine to mention these in docstring? What does the best practice say? Answer This is too long for a comment, but it is not a full answer either, because it is based …
Google PubSub – Ack a message using ack_id
I have an architecture made of: PubSub Topic ‘A’ Subscription ‘B’ on topic ‘A’ that pushes messages to the endpoint ‘X’ Cloud Function ‘C’ triggered by the endpoint ‘X’, runtime in Python Everytime a new message is published on the topic …
How to add a traditional classifier(SVM) to my CNN model
here’s my model i want to make svm classifier as my final classifier in this model so how can i do that? also another question i want to know the predicted class of a certain input so when i use it only gives me probabilities so how can i solve that too Answer You can use neural network as feature
Switching off all Folium tiles
I’m wondering if it’s possible to switch off all Folium tiles that have been added to a Folium Map object. By default one tile should be selected, but could be displayed a blank background? It’s an option that I thinkg could be useful to enhance the visualization of the entities that have be…
Inserting rows from df to MS Access Error “number of query values and destination fields are not the same”
I have a dataframe called df2 which has the following columns: I count this as 8 columns. I have saved the column names into cols: Again, I’m seeing 8 columns. And, in Access I have a table that has these columns (none of which are assigned as a primary key, for now): which is 8 columns. I tried to exec…
Django not showing group manage options in admin page
Recently, I deployed a Django web app. However, when I’m accessing the admin page, I’m not getting the expected interface to add or remove a user from a certain group: At the of inspecting the page, I’m receiving the following messages: any idea about how to handle these errros? Thanks! Answ…