conda environment ModuleNotFoundError for yaml but it is installed

Question

conda ModuleNotFoundError in a virtual env but not in base

I am using Anaconda / Conda
Conda version 4.10.1
(base) Python 3.8.5

using the (base) environment, I create, build, and run my code without incident.

From the same path location and command consolte, I create and activate a conda virtual environment

I start to populate the env with the packages needed by trying to run the code and resolving each ModuleNotFoundError.
I started from Python (3.9.4)

When I get to yaml, it still fails to run on ModuleNotFoundError

python sgchecker.py
Traceback (most recent call last):
File "sgchecker.py", line 7, in
import yaml
ModuleNotFoundError: No module named 'yaml'

conda list

shows yaml (0.2.5) is installed

pip list

does not. This is not alarming as pip list does not always show the complete list of packages.
I install via conda as preferred method.

I tried:

pip install yaml
ERROR: Could not find a version that satisfies the requirement yaml
ERROR: No matching distribution found for yaml

I tried (3) with yaml installed and removed via conda with same results

I suspect the results of (3) should lead to the solution, but so far, it has not.

@merv it would have if I found it before the previous post pointed me to the same answer. — J. Craig Williams, May 13 '21 at 19:48

score 4 · Answer 1 · edited Apr 13 '23 at 15:33

4

Run this command inside conda environment:

conda install pyyaml

edited Apr 13 '23 at 15:33

imxitiz

answered May 13 '21 at 11:03

J. Craig Williams

1 Answers1