Python 检查文件是否存在

os.path.exists()

如果存在，返回True，否则返回False

import os.path
from os import path
def main():
    print("file exist: " + str(path.exists('Beakman.txt')))
    print("File exist: " + str(path.exists('career.Beakman.txt')))
    print("directory exists: " + str(path.exists('BeakmanDirectory')))
if __name__ == "__main__":
    main()

os.path.isfile()

如果存在，返回True，否则返回False

import os.path
from os import path
def main():
    print("Is it File? " + str(path.isfile('Beakman.txt')))
    print("Is it File? " + str(path.isfile('BeakmanDirectory')))
if __name__ == '__main__':
    main()

os.path.isdir()

如果存在，返回True，否则返回False

import os.path
from os import path
def main():
   print ("Is it Directory?" + str(path.isdir('Beakman.txt')))
   print ("Is it Directory?" + str(path.isdir('BeakmanDirectory')))
if __name__== "__main__":
   main()