ModuleNotFoundError: No module named 'Cryptodome'

[shreyas-badiger]

Unable to run example_run.py

[gannimo]

You need to install the Cryptodome library. You can do so through sudo apt install python3-pycryptodome, pip install pycryptodome or pip3 install pycryptodomex. I've updated the README accordingly. Thanks!

[shreyas-badiger]

Thanks!
The command is actually:
pip3 install pycryptodomex

[gannimo]

This depends on your local system. If you have both legacy python and python3 installed then pip installs for legacy, otherwise pip installs for python3. I'll make a note :)

[avandeursen]

I think @HARD-FAULT is referring not just to python3, but also to the x version of PyCryptodome.

pip install pycrotodomex works like a charm for me
pip install pycrotodome gives the ModuleNotFoundError

[gannimo]

OK, I'll adjust. There are too many sub libraries and the different pip commands refer to different subsets of the library. Debian/Ubuntu conveniently installs both. Thanks!

[koenvervloesem]

Note that in a Python 3 virtual environment, you also need to install pycryptodomex instead of pycryptodome:

$ python3 -m venv venv
$ source venv/bin/activate
(venv) $ pip3 install pycryptodome
(venv) $ python3 example_run.py
Traceback (most recent call last):
File "example_run.py", line 23, in
import LowCostDP3T
File "/home/koan/reference_implementation/LowCostDP3T.py", line 20, in
from Cryptodome.Util import Counter
ModuleNotFoundError: No module named 'Cryptodome'
(venv) $ pip3 install pycryptodomex
(venv) $ python3 example_run.py
Day: Alice, Bob, and Isidor do not have contact.
Day: Alice, Bob, and Isidor do not have contact.
Day: Alice and Bob work in the same office, Isidor elsewhere.
Day: Alice and Bob work in the same office, Isidor elsewhere.
Day: Alice and Bob work in the same office, Isidor elsewhere.
Day: Bob and Isidor meet for dinner.
Isidor is tested positive.
Check exposure of Alice and Bob.
Alice: (not positive)
Bob: (at risk)
At risk, observed e91393fcf6d314d95ad607a1cbe00fa6 on day -1 for 121

[robin-shaun]

I think @HARD-FAULT is referring not just to python3, but also to the x version of PyCryptodome.

pip install pycrotodomex works like a charm for me
pip install pycrotodome gives the ModuleNotFoundError

A spelling mistake, it's pycryptodomex.

[gannimo]

Updated the comment to give options. Note that the README itself has much changed over time and this thread is likely no longer valid at all for this implementation.