Answers for "os.path.exists"

pathlib path exists

import pathlib
path = pathlib.Path('my/path/to/file/or/dir')
assert path.exists()

python join paths

import os

# Join paths using OS import. Takes any amount of arguments
path = os.path.join('/var/www/public_html', './app/', ".\my_file.json")

print(path) # /var/www/public_html/app/myfile.json