When I try to run app.py (Python 3.3, PyCrypto 2.6) my virtualenv keeps returning the error listed above. My import statement is just from Crypto.Cipher import AES
from Crypto.Cipher import AES
If you are using this module with Python3 and having trouble with import. try this.
pip uninstall crypto pip uninstall pycryptodome pip install pycryptodome
Good Luck!