sfs | Safe File Storage | Storage library

Is there a way to remove numbers from the string at appears only at the last. Example

I am using sequential feature selection (sfs) from mlxtend for running step forward feature selection.

I'm trying to convert a string into a list wherever there is a bracket and using no libraries. So a string like '[wewr[sfs]]' should return ['w','e','w','r',['s','f','s']]. I'm not looking for a solution, just some guidance or advice over what is wrong with my code, the outcome I'm getting so far is ['w']

My Initial import looks like this and this code block runs fine.

I have a series of identically formatted spreadsheets that I need to import into an access db. Unfortunately the spreadsheet data isn't in tabular form so I need to import a bunch of specific cells.

I read specific cells into variables and construct a query to insert rows into a table.

The code fails, when a cell contains a formula that equates to an error. To avoid the error, I must insert Null instead of the error value. How do I insert Null instead of the error value?

The "(Type 1 if you dont want to upload an Image.)" doesn't actually work, how do I make it functional ? For example if someone prefers not to add an image into the embed, they can just type "1" and it will ignore the last question.

im trying to compile my app, but the ide shows an error at ":app:mergeDebugResources", that is "ParseError at [row,col]:[33,47]", i think the error is in my activity_main.xml file, but i cant find it, please help.

Here is the file:-

I've built an NBA lineup generator that optimizes a lineup for 9 positions (2 x Point Guard (PG), 2 x Shooting Guard (SG), 2 x Small Forward (SF), 2 x Power Forward (PF), 1 x Centre (C)) using the projections provided for each player.

Initially to handle players who can play 2 positions I put a constraint that stopped the same player from being picked twice in a lineup, and it is working correctly. The issue I'm running into is occasionally when I build multiple lineups two of them will be duplicates but the program believes they are different.

Version 1 of the Generator

For example what occurs is a lineup is built where Player A and Player B are both picked, but they are both dual position players, and they share the same dual positions (for instance both can be a PG or SG), for the generator will interchange them for in Lineup 1 Player A is selected as a PG and B as a SG and in Lineup 2 Player A is selected as a SG and B as a PG.

The code I was to constrain the position in this first version is per the below:

So I'm performing a feature selection using SVM with the mlxtend packege. X is a dataframe with the features, y is the target variable. This is part of my code.