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I am new to docker and trying to move one simple application to docker. Python standard modules I am able to import using "pip install". However, I have some custom python utility files that I would like to use. These files are in separate package "utils".
In my main python file : test.py, I am doing
from utils import math.py, logger.py
This outside of docker works fine, but when running through docker gives me the error "ImportError: No module named utils".
My Dockerfile code:
FROM python:2.7.11
ADD ./ test_project/
WORKDIR test_project
ENV PATH=$PATH:/test_project/utils
ENV PYTHONPATH /test_project/utils
CMD [ "python", "report/test.py"]
My directory structure:
test_project
reportutilsAny suggestions?
876
It’s easy to mistakenly end up with multiple Python interpreters in your Docker image. When that happens, you might install your code with interpreter A, but try to run it with interpreter B—which then can’t find the code. Here’s a somewhat contrived example of how this happens:
/usr/local/bin/python is the Python interpreter provided by the Docker image. This is what the ENTRYPOINT is running. In /usr/bin/python3 is the Python interpreter installed via apt-get .
The name of the module is incorrect The first reason of this error is the name of the module is incorrect, so you have to check out the module name that you had imported. For example, let's try to import os module with double s and see what will happen: as you can see, we got No module named 'oss'.
Your code runs fine on your computer, but when you try to package it with Docker you keep getting ImportError s or ModuleNotFoundError: Python can’t find your code. There are multiple reasons why this can happen, some of them Python-specific, some of them Docker-specific.
You set PYTHONPATH to /test_project/utils. When trying resolve the module utils, it is looking for one of:
/test_project/utils/utils.py
/test_project/utils/utils/ that contains __init__.py.It looks like you have this?
utils/math.py
utils/logger.py
I wonder if what you really mean to do is
# different path...
ENV PYTHONPATH /test_project
from utils import math
from utils import logger
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