Python을 사용하여 파일이 존재하는지 확인하는 방법

import os
os.path.exists(test_file.txt)
#True
os.path.exists(no_exist_file.txt)
#False

import os
os.path.exists(test_dir)
#True
os.path.exists(no_exist_dir)
#False

import os
os.path.isfile("test-data")

os.access(path, mode)

import os
if os.access("/file/path/foo.txt", os.F_OK):
    print "Given file path is exist."
if os.access("/file/path/foo.txt", os.R_OK):
    print "File is accessible to read"
if os.access("/file/path/foo.txt", os.W_OK):
    print "File is accessible to write"
if os.access("/file/path/foo.txt", os.X_OK):
    print "File is accessible to execute"

try:
    f =open()
    f.close()
except FileNotFoundError:
    print "File is not found."
except PersmissionError:
    print "You don't have permission to access this file."

try:
    f =open()
    f.close()
except IOError:
    print "File is not accessible."

path = pathlib.Path("path/file")
path.exist()

path = pathlib.Path("path/file")
path.is_file()