Create a correct environment e.g. using conda. We need quite specific versions, e.g. python 3.7 and some other specific versions of some packages. So save yourself some pain and do it the quick way ;)

conda create --name myenv --file package-list.txt

Make shell script executable variance

chmod +x update_data.sh

./update_data.sh

python download_covid_hist_data.py python download_pm25_hist_data.py python concatenate_all_files_in_dir.py