>>> import os >>> os.stat(path_to_file).st_size == 0
or
>>> import os >>> os.path.getsize(path_to_file) > 0
However, both will throw an exception if the file does not exist. To avoid having to catch such an error, do this:
import os def is_empty_file(fpath): return os.path.isfile(fpath) and os.path.getsize(fpath) > 0
which will return a bool value.