# coding=utf-8
import os
if __name__ == '__main__':
if os.path.isfile('test.txt'):
print ("test.txt exist")
else:
print ("test.txt not exist")
if os.path.isfile('hello.py'):
print ("hello.py exist")
else:
import os
if __name__ == '__main__':
if os.path.isfile('test.txt'):
print ("test.txt exist")
else:
print ("test.txt not exist")
if os.path.isfile('hello.py'):
print ("hello.py exist")
else:
print ("hello.py not exist")