my pythonpath has 'register2',why i can't import it

Question

import sys
print sys.path

['D:\\zjm_code\\register2', 'C:\\WINDOWS\\system32\\python25.zip', 'D:\\Python25\\DLLs', 'D:\\Python25\\lib', 'D:\\Python25\\lib\\plat-win', 'D:\\Python25\\lib\\lib-tk', 'D:\\Python25', 'D:\\Python25\\lib\\site-packages']

and

#from django.core.management import setup_environ
from register2 import settings
#setup_environ(settings)

Traceback (most recent call last):
  File "D:\zjm_code\register2\b.py", line 4, in <module>
    from register2 import settings
ImportError: No module named register2

why ,

thanks

Answer 1

When directory 'D:\\\\zjm_code\\\\register2' is on sys.path , this means you can import modules and packages that are INSIDE that directory.

To import the directory register2 itself, two conditions:

1. its parent , 'D:\\\\zjm_code' , must be on sys.path ; and
2. file 'D:\\\\zjm_code\\\\register2\\\\__init__.py' must exist

__init__.py is the code that actually executes when you "import the directory".

Answer 2

大声笑，因为它尝试从register2导入某些内容，但由于路径上没有D：\\ zjm_code而无法这样做。