calculate directory size

calculate_dir.py

# http://stackoverflow.com/questions/1392413/calculating-a-directory-size-using-python

import os
def get_size(start_path = '.'):
    total_size = 0
    for dirpath, dirnames, filenames in os.walk(start_path):
        for f in filenames:
            fp = os.path.join(dirpath, f)
            total_size += os.path.getsize(fp)
    return total_size

print get_size()