How to fix shell script?

Question

Programming

I'm trying to create a log with the current date and run a python script in this log
, I can't figure out if I'm calling the _file variable correctly?

#!/bin/sh

_now=$(date +"%d-%m-%Y-%H-%m")
_file="/home/folder/logs/log_$_now.txt"
sudo touch $_file

cd /home/folder/logs
sudo python3 handleMouseEvent.py > ${_file}

Answer 1

$ ls -ld /home/folder/logs
will most likely return something like:
give write permissions to the folder to all users:
and throw out sudo from the script:

#!/bin/sh

NOW=$(date +"%d-%m-%Y-%H-%m")
PYFILE="/home/folder/logs/handleMouseEvent.py"
LOGFILE="/home/folder/logs/log_$NOW.txt"

python3 $PYFILE > $LOGFILE

should work.
PS changedir is also better not to use

Answer 2

Why do you need sudo to create a file and run python?
If you need sudo - run the whole script, that is:

#!/bin/sh

OUTFILE="/home/folder/logs/log_$(date +"%d-%m-%Y-%H-%m").txt"
cd /home/folder/logs
python3 handleMouseEvent.py > ${OUTFILE}

and then
sudo myscript.sh
Second, you do a redirect > and before that you do a touch - why? redirect and so will create the file you need. The main thing is that the user from which you run (with sudo - root) has write permissions in the specified folder.
PS In the shell, it is customary to name variables in upper case.