how to get size of folder python

1import os
2
3def get_size(start_path = '.'):
4    total_size = 0
5    for dirpath, dirnames, filenames in os.walk(start_path):
6        for f in filenames:
7            fp = os.path.join(dirpath, f)
8            # skip if it is symbolic link
9            if not os.path.islink(fp):
10                total_size += os.path.getsize(fp)
11
12    return total_size
13
14print(get_size(), 'bytes')