python how to use file in path code example

Example 1: python get full path

import os
# you have to be in the same directory as the file
file = 'myfile.txt'
# or also
file = 'directory/to/myfile.txt'

path = os.path.abspath(file)

Example 2: python how to open a file in a different directory in mac

import os
f = open (os.path.expanduser("~/Desktop/somedir/somefile.txt"))