python 读取文件大小,如何在Python中检查文件大小？

I am writing a Python script in Windows. I want to do something based on the file size. For example, if the size is greater than 0, I will send an email to somebody, otherwise continue to other things.

How do I check the file size?

解决方案

You need the st_size property of the object returned by os.stat. You can get it by either using pathlib (Python 3.4+):

>>> from pathlib import Path

>>> Path('somefile.txt').stat()

os.stat_result(st_mode=33188, st_ino=6419862, st_dev=16777220, st_nlink=1, st_uid=501, st_gid=20, st_size=1564, st_atime=1584299303, st_mtime=1584299400, st_ctime=1584299400)

>>> Path('somefile.txt').stat().st_size

1564

or using os.stat:

>>> import os

>>> os.stat('somefile.txt')

os.stat_result(st_mode=33188, st_ino=6419862, st_dev=16777220, st_nlink=1, st_uid=501, st_gid=20, st_size=1564, st_atime=1584299303, st_mtime=1584299400, st_ctime=1584299400)

>>> os.stat('somefile.txt').st_size

1564

Output is in bytes.