how to extract the filename from a file path in python code example

Example 1: python extract thefile name from relative path

import os
infile = "./../../../../_data/matrix_data/5mer_normalized.tsv"
print(os.path.basename(infile))
>>> "5mer_normalized.tsv"

Example 2: python file from path

import os 
dir_path = os.path.dirname(os.path.realpath(__file__))