每天CookBook之Python-084

• 判断文件是否存在

import os

print(os.path.exists('/etc/passwd'))
print(os.path.isfile('ch_05_11.py'))
print(os.path.isdir('ch_05_11.py'))
print(os.path.islink('ch_05_11.py'))
print(os.path.realpath('ch_05_11.py'))
print(os.path.getsize('ch_05_11.py'))
print(os.path.getmtime('ch_05_11.py'))

import time

print(time.ctime(os.path.getmtime('ch_05_11.py')))

out

False
True
False
False
D:\Project\cookbook\cookbook-python\ch_05\ch_05_11.py
270
1469190621.337618
Fri Jul 22 20:30:21 2016