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JuliaからPythonの関数を呼び出す(Docker)

Posted at

ソース

Julia

jsample.jl
ENV["PYTHON"] = "/usr/local/bin/python"
import Pkg
using Pkg
Pkg.add(["PyCall"])
Pkg.build(["PyCall"])
using PyCall

if PyVector(pyimport("sys")["path"])[1] != ""
    pushfirst!(PyVector(pyimport("sys")["path"]), "")
end

sample = pyimport("pysample")
total = sample.sum(10, 20)
println("total:", total)

Python

pysample.py
def sum(num1, num2):
    return num1 + num2

docker-compose.yml

version: '3'
services:
  julia-python:
    restart: always
    build: .
    container_name: 'julia-python'
    working_dir: '/root/'
    tty: true
    volumes:
      - ./src:/root/

Dockerfile

FROM python:3
USER root

RUN apt-get update
RUN apt-get -y install locales && \
    localedef -f UTF-8 -i ja_JP ja_JP.UTF-8
ENV LANG ja_JP.UTF-8
ENV LANGUAGE ja_JP:ja
ENV LC_ALL ja_JP.UTF-8
ENV TZ JST-9
ENV TERM xterm

RUN pip install --upgrade pip
RUN pip install --upgrade setuptools
RUN wget https://julialang-s3.julialang.org/bin/linux/x64/1.7/julia-1.7.2-linux-x86_64.tar.gz
RUN tar -zxvf julia-1.7.2-linux-x86_64.tar.gz
RUN mv julia-1.7.2 /opt/
RUN ln -s /opt/julia-1.7.2/bin/julia /usr/local/bin/julia

環境

Dockerが実行できる環境

実行

cd julia-python
docker compose up -d --build
docker compose exec julia-python bash
julia jsample.jl

結果

total:30

JuliaからPythonの関数を呼び出すことに成功。

juliaファイルとpythonファイルのディレクトリが違う場合

ディレクトリ構成例

-julia.jl
-test
  └─python.py

ディレクトリをインポートする箇所を

pushfirst!(PyVector(pyimport("sys")["path"]), "test")

に変更する。

GitHub

参考文献

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