Add a new line after each new file name in python

I have a short Python script that opens a directory and puts all of the file names into a .txt file. I have tried a few ways to add a new line after each file name but cannot do it. I also want to convert the entire string to uppercase.

Here is what I have:

import os

#Path where the photos are stored
path1 = r"V:\DATABASES\0 Suspension\Suspensia Pictures"

#Variable to list all the files in the dorectory
file_dir = os.listdir(path1)

#Opens a new text file called Pics
newfile = open('Pics.txt','w')

#Writes lines in the file as a string
newfile.write(str(file_dir))

#Prints out all the file names
#print(file_dir)ode here

What I was thinking for the new line was to add print('\n') after the newfile.write(str(file_dir)) line. However, that did not work.

As for the uppercase I am not sure where to put the .upper().

Thanks for the help

>Solution :

os.listdir() gives you a list of strings, so converting its output would give you a string that looks like a list of strings.

Do this instead:

#Writes lines in the file as a string
newfile.write('\n'.join(file_name.upper() for file_name in file_dir))