CODEWITHSUNDEEP
pythongoogle-app-enginecython
Eliezer
Eliezer

Reputation: 7347

Cython For Appengine

Is it possible to use Cython in appengine (with Python 2.7 specifically)? I could see using it when some code is not performing well, and could use a speed boost by having a statically defined type, or loop optimization, etc...

Upvotes: 3

Views: 847

Answers (3)

Tunneller
Tunneller

Reputation: 599

The answers above are dated, but the question is still a good one. You can run Cython with gcloud now provided that you cythonize at build time.

For example:

# Load python version
FROM python:3.11

# Allow statements and log messages to immediately appear in the Knative logs
ENV PYTHONUNBUFFERED True

# Copy local code to the container image.
ENV APP_HOME /app
WORKDIR $APP_HOME
COPY . ./

# Install production dependencies and cythonize .pyx files
RUN pip install -r requirements.txt
RUN python setup.py build_ext --inplace

# Run the web service on container startup. Here we use the gunicorn 
CMD exec gunicorn --bind :$PORT --workers 1 --threads 8 --timeout 0 run:app

Now, there is an interesting twist if you use a SLIM build of python. In that case gcc is not included and so cythonizing will fail. So then you have to load gcc by hand:

# The slim python doesnt include gcc
FROM python:3.11-slim 

# Allow statements and log messages to immediately appear in the Knative logs
ENV PYTHONUNBUFFERED True

# Copy local code to the container image.
ENV APP_HOME /app
WORKDIR $APP_HOME
COPY . ./

# Install production dependencies
RUN pip install -r requirements.txt

# Install gcc and cythonize 
RUN apt-get update
RUN apt-get -y install gcc 
RUN python setup_pyd.py build_ext --inplace

# Run the web service on container startup. Here we use the gunicorn 
CMD exec gunicorn --bind :$PORT --workers 1 --threads 8 --timeout 0 run:app

Upvotes: 0

fmatheis
fmatheis

Reputation: 251

This is now possible with Managed VMs.

The following project will serve as an example:

https://github.com/GoogleCloudPlatform/appengine-vm-fortunespeak-python

Upvotes: 0

Daniel Roseman
Daniel Roseman

Reputation: 599796

No, this is very clearly not possible. GAE has very strong restrictions on what you can run inside its sandbox, and one of the most definitively spelled-out restrictions is that you cannot run arbitrary C code:

All code for the Python runtime environment must be pure Python, and not include any C extensions or other code that must be compiled.

Upvotes: 4

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