installing cPickle with python 3.5

python docker pickle python-3.5
kampta picture kampta · May 10, 2016 · Viewed 101.5k times · Source

This might be silly but I am unable to install cPickle with python 3.5 docker image

Dockerfile

FROM python:3.5-onbuild

requirements.txt

cpickle

When I try to build the image

$ docker build -t sample .
Sending build context to Docker daemon 3.072 kB
Step 1 : FROM python:3.5-onbuild
# Executing 3 build triggers...
Step 1 : COPY requirements.txt /usr/src/app/
Step 1 : RUN pip install --no-cache-dir -r requirements.txt
 ---> Running in 016c35a032ee
Collecting cpickle (from -r requirements.txt (line 1))
  Could not find a version that satisfies the requirement cpickle (from -r requirements.txt (line 1)) (from versions: )
No matching distribution found for cpickle (from -r requirements.txt (line 1))
You are using pip version 7.1.2, however version 8.1.1 is available.
You should consider upgrading via the 'pip install --upgrade pip' command.
The command '/bin/sh -c pip install --no-cache-dir -r requirements.txt' returned a non-zero code: 1

Answer

Mike McKerns picture Mike McKerns · May 10, 2016

cPickle comes with the standard library… in python 2.x. You are on python 3.x, so if you want cPickle, you can do this:

>>> import _pickle as cPickle

However, in 3.x, it's easier just to use pickle.

No need to install anything. If something requires cPickle in python 3.x, then that's probably a bug.

Related questions

Docker "ERROR: could not find an available, non-overlapping IPv4 address pool among the defaults to assign to the network"

I have a directory apkmirror-scraper-compose with the following structure: . ├── docker-compose.yml ├── privoxy │   ├── config │   └── Dockerfile ├── scraper │   ├── Dockerfile │   ├── newnym.py │   └── requirements.txt └── tor └── Dockerfile I'm trying to run the following docker-compose.yml: version: '3' services: privoxy: build: ./privoxy ports: - "8118:8118" links: …

Read More
Can't create a docker image for COPY failed: stat /var/lib/docker/tmp/docker-builder error

I want to create a docker image. This is my work directory: Dockerfile.in test.json test.py And this is my Dockerfile: COPY ./test.json /home/test.json COPY ./test.py /home/test.py RUN python test.py When …

Read More
standard_init_linux.go:211: exec user process caused "exec format error"

I am building the Dockerfile for python script which will run in minikube windows 10 system below is my Dockerfile Building the docker using the below command docker build -t python-helloworld . and loading that in minikube docker demon docker save python-helloworld | (…

Read More