jah | Jah calmly watches while god works | Machine Learning library

when i try to remove a node from a child in firebase, it crashes my code giving a fatal error saying "index out of bounds". The end result is to delete the data associated with the ID from the UID. i have attached the code for the cell removing

I have links that look something like this:

https://www.sample.com/sam-i/mel/Vo-20-Jah-Ma-O-lei-da-la-Ede-vn-Clas-Ma-O-ei-45597.html

The part after .com in the links is always diffrent, but they always end on .html.

I want to extract this part with regex:

mel/Vo-20-Jah-Ma-O-lei-da-la-Ede-vn-Clas-Ma-O-ei-45597.html

But with this regex:

(?:.(?!\/))+$

I only get this part :

/Vo-20-Jah-Ma-O-lei-da-la-Ede-vn-Clas-Ma-O-ei-45597.html

So how can I tell regex to get everything after the penultimate backslash?

I want to make my code loop with an else statement. Is there a way to make it loop infinitely?

Trying to make it so that if it isnt one of these, it gives that message. it usually always just gives this message as the code says all of them. I want it to be either or.

I've tried what is in the code, I tried to bundle the if statement with it, but to no avail.

Note, am very new to coding.

I am working in the field of astronomy, and the process that I use to unzip the images that I get from the telescopes can be very tedious. The format that the images come in is 'fits.fz' which stands for fits.fits-zipped. I want to decompress these into just '.fits'. I have already I'm working on a program that simplifies this process of decompressing. I have created a graphical interface with two buttons through Python and Tkinter. The first button creates a text file named 'list.txt' and then executes a pre-existing .bat file which dumps the names of every file in a specific directory that ends with 'fits.fz' into 'list.txt'. The first button is also supposed to copy the specific names of the files into a very specific place in another bat file. The other .bat file is called 'Decompress.bat' and is supposed to use the following command for each file in 'list.txt':

My Code :

For my python homework assignment, The program asks the user for three strings and prints the average length of the strings entered

My code:

I have two two lists (mylist and myline). I want to add each element of mylist to the first element of myline, such that for each element in mylist I get a new myline where myline[0] = mylist[x] + "_" + myline[0]. For example: