关于从其他目录导入的Python文件结构

Question

I have problems with importing some functions in the file stored in other directories and importing random method from Crypto library.

I installed Python34 and PyCrypto 2.6.1 in window 7.

Here is my file structure

my_project
/dh
/__pycache__
/__init__.py
./lib
/__init__.py
/helpers.py

In the /dh/__init__.py file I have three import statements as follows

from Crypto.Hash import SHA256 -> it is fine


from Crypto.Random import random -> gives me error "from Crypto.Random import OSRNG ImportError: cannot import name 'OSRNG' "


from lib.helpers import read_hex --> gives me error "from lib.helpers import read_hex ImportError: No module named 'lib' "

I found out that there is not such file or folder OSRNG in Python34/Lib/sit-packages/Crypto/Random/

How can I fix these two errors?

Thanks guys

Answer 1

Adding an answer as I don't have enough reputation to comment.

I tried this in my system, I am able to import all the modules/Classes mentioned in the question. I do see the OSRNG directory.

Are you sure you installed it properly? Try reinstalling it. Also, are you using a virtualenv? If so, may be you forgot to activate it?