No module named 'rng_base'

Question

It's error when I run Python manage.py runserver. I Google, but no answer.

  File "/Users/ahkomu/Documents/myproject/account/models.py", line 21, in <module>
    from utils.encryption import AESCipher
  File "/Users/ahkomu/Documents/myproject/utils/encryption.py", line 4, in <module>
    from Crypto import Random
  File "/Users/ahkomu/Documents/myproject/venv/lib/python3.9/site-packages/Crypto/Random/__init__.py", line 28, in <module>
    from Crypto.Random import OSRNG
  File "/Users/ahkomu/Documents/myproject/venv/lib/python3.9/site-packages/Crypto/Random/OSRNG/__init__.py", line 32, in <module>
    from Crypto.Random.OSRNG.posix import new
  File "/Users/ahkomu/Documents/myproject/venv/lib/python3.9/site-packages/Crypto/Random/OSRNG/posix.py", line 32, in <module>
    from rng_base import BaseRNG
ModuleNotFoundError: No module named 'rng_base'

Answer 1

If 2nd answer does not work try replacing

from rng_base import BaseRNG

with

from Crypto.Random.OSRNG.rng_base import BaseRNG

If this does not work, I would recommend checking the directory where you have pycrypto and finding the correct path to OSRNG.

Answer 2

It would be helpful to know which version of Crypto/pycrypto you're using but it looks like pycrypto is not well supported: ImportError: No module named Crypto.Cipher

It is possible that your version of Crypto is not compatible with the version of Python 3.9 you have installed since 3.9 was release in 2020.

Try creating your venv with a version of python that existed at the time your version of Crypto was released.

This also discusses an issue with posix: https://github.com/pypa/pipenv/issues/5074

Answer 3

Go to the source code of pycrypto in your local machine and, in file

Random/OSRNG/posix.py

change the line

from rng_base import BaseRNG

by

from Crypto.OSRNG.rng_base import BaseRNG