file size python

import os
stats = os.stat('path\to\file\filename.ext')
print(stats.st_size)

from pathlib import Path

f = Path('path\to\file\filename.ext')
size = f.stat().st_size
print(size)

import os

size = os.path.getsize('path\to\file\filename.ext')
print(size)

import os

with open('path\to\file\filename.ext', 'r') as f:
    size = f.seek(0, os.SEEK_END)
    print(size)