pycharm运行程序报错?报错

我用pycharm写的python代码昨天还能用，今天突然就不能运行了  直接print “hello，world”也会报错。

报错信息如下：

D:\Python27\python.exe "D:\Program Files (x86)\JetBrains\PyCharm 5.0.1\helpers\profiler\run_profiler.py" 127.0.0.1 52394 E:/python/deflo.py
Traceback (most recent call last):
  File "D:\Python27\lib\site.py", line 548, in <module>
    main()
  File "D:\Python27\lib\site.py", line 527, in main
    known_paths = removeduppaths()
  File "D:\Python27\lib\site.py", line 110, in removeduppaths
    dir, dircase = makepath(dir)
  File "D:\Python27\lib\site.py", line 80, in makepath
    dir = os.path.join(*paths)
AttributeError: 'module' object has no attribute 'path'

哪位大神给看下