I was explaining[1] in-place operations vs out-of-place operations to a new user of Pandas. This resulted in us discussing passing objects by reference of by value. Naturally, I wanted to show pandas.DataFrame.values as I thought it shared the memory location of the underlying data of the DataFrame. However, …
How do I make a list of the same variable with different values? python
I am a complete newbie and this might be a dumb question: I need to make a list of the values as u can see down here. I will most likely need a for loop using append from what I have read till now but I cant really grasp how to do it in my case. I want to start
Build a dask dataframe from a list of dask delayed objects
I have a list of dask delayed objects Portfolio_perfs: Each delayed object is a numpy array of length 2 I want to build the following dataframe without using dask.compute: How can I build this dask dataframe without going through dask.compute? Thank you Answer Since each delayed object is a numpy array, you a…
Sudoku backtracking solver bug
Ok, I’ve been scratching my head over this for a few hours now.. My goal was to code a sudoku solver that uses the backtracking method and to show the progress of the algorithm using pygame. For this I have to keep track of the events, I did it by appending them to a list named registre as is shown
LSTM neural network test to predict SPY prices giving me this error after training
Error is as follows: My Code is as follows: Not sure what’s going on…. Answer Just check you train dataset, there is no Open column there, so dataset_train[‘Open’] fails: Output: Maybe you want to use dataset_train[‘Value’] instead
Python~JSON error → json.decoder.JSONDecodeError: Expecting value: line 1 column 1 (char 0)
I was working on my discord bot and found a api(named numapi) which i want to use, i made a prototype in my pc which was ↓↓↓↓ and it worked fine. But when i copied the same thing in my discord bot then it was not working. The code and error are as follows :- code error pls help me
Combine all column elements except two particular columns
I want to combine the elements in all columns except two columns, ‘SourceFile’ and ‘Label’. I tried the above code. Which resulted in value error. There is so many columns. So I can’t use Answer col != [‘SourceFile’,’Label’] is syntactically wrong and it g…
Creating a list merging the elements of a previous list and the values of a specific column of a data frame
I want to create a new list merging the elements of a previous list plus the values of a specific column of one data frame. See the example below. The list I already have: The column: The desired output: Answer IIUC, just loop over them:
Counting unique mentions in Pandas dataframe column while grouped by multiple other columns
For a school project I am attempting to determine the number of mentions specific words have in Reddit titles and comments. More specifically, stock ticker mentions. Currently the dataframe looks like this (where type could be a string of either title or comment): Where the mentions column contains a set of t…
How to remove extra spaces from the data which is being entered
I am trying to remove the extra space from the data which is entered as input. I tried using the .strip() condition but it doesn’t remove the extra space of the entered data. the code I wrote to remove extra space Answer These are 3 ways of dealing with spaces you can use according to your needs: 1- the…