python: Initial implementation

.github/workflows/python.yml

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+name: Python CI
+on:
+  push:
+    branches: [main]
+    paths:
+      - bench/**/*
+      - webapp/python/**/*
+      - webapp/sql/**/*
+      - webapp/pdns/**/*
+      - development/docker-compose-common.yml
+      - development/docker-compose-python.yml
+      - development/Makefile
+      - .github/workflows/python.yml
+  pull_request:
+    paths:
+      - bench/**/*
+      - webapp/python/**/*
+      - webapp/sql/**/*
+      - webapp/pdns/**/*
+      - development/docker-compose-common.yml
+      - development/docker-compose-python.yml
+      - development/Makefile
+      - .github/workflows/python.yml
+  workflow_dispatch:
+jobs:
+  test:
+    strategy:
+      matrix:
+        go:
+          - 1.21.1
+    name: Build
+    runs-on: [isucon13-ci-06]
+    steps:
+      - name: Setup Go
+        uses: actions/setup-go@v4
+        with:
+          go-version: ${{ matrix.go }}
+        id: go
+
+      - name: Setup Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: 20
+
+      - name: Setup corepack
+        run: corepack enable yarn
+
+      # to avoid error: Deleting the contents of '/home/ubuntu/actions-runner/_work/isucon13/isucon13'
+      #                 Error: File was unable to be removed Error: EACCES: permission denied, rmdir
+      # https://github.com/actions/checkout/issues/211
+      - name: chown workdir
+        run: sudo chown -R $USER:$USER $GITHUB_WORKSPACE
+
+      - name: Check out code into the Go module directory
+        uses: actions/checkout@v3
+
+      # containers
+      - name: "setup containers"
+        working-directory: ./development
+        run: |
+          make down/python
+          make up/python
+
+      - name: "[frontend] build"
+        working-directory: ./frontend
+        run: |
+          make
+
+      # bench
+      - name: "[bench] Get deps"
+        working-directory: ./bench
+        env:
+          TZ: Asia/Tokyo
+        run: |
+          go get -v -t -d ./...
+
+      - name: "[bench] Test"
+        working-directory: ./bench
+        env:
+          TZ: Asia/Tokyo
+        run: |
+          go clean -testcache
+          go test -p=1 -v ./...
+
+      - name: "run bench"
+        working-directory: ./bench
+        run: |
+          make bench

development/docker-compose-python.yml

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+version: "3.0"
+
+services:
+  webapp:
+    cpus: 2
+    mem_limit: 4g
+    build:
+      context: ../webapp/python
+    init: true
+    working_dir: /home/isucon/webapp/python
+    container_name: webapp
+    volumes:
+      - ../webapp/sql:/home/isucon/webapp/sql
+      - ../webapp/pdns:/home/isucon/webapp/pdns
+      - ../provisioning/ansible/roles/powerdns/files/pdns.conf:/etc/powerdns/pdns.conf:ro
+      - ../provisioning/ansible/roles/powerdns/files/pdns.d/docker.conf:/etc/powerdns/pdns.d/docker.conf:ro
+      - ../webapp/img:/home/isucon/webapp/img
+    environment:
+      ISUCON13_MYSQL_DIALCONFIG_ADDRESS: mysql
+      ISUCON13_POWERDNS_HOST: powerdns
+      ISUCON13_POWERDNS_SUBDOMAIN_ADDRESS: 127.0.0.1
+      ISUCON13_POWERDNS_DISABLED: false
+    ports:
+      - "127.0.0.1:8080:8080"
+    depends_on:
+      mysql:
+        condition: service_healthy

webapp/python/Dockerfile

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+FROM python:3.12-bookworm
+
+WORKDIR /tmp
+ENV DEBIAN_FRONTEND=noninteractive
+RUN apt-get update && \
+    apt-get -y upgrade && \
+    apt-get install -y curl wget gcc g++ make sqlite3 locales locales-all && \
+    wget -q https://dev.mysql.com/get/mysql-apt-config_0.8.22-1_all.deb && \
+    apt-get -y install ./mysql-apt-config_0.8.22-1_all.deb && \
+    apt-get -y update && \
+    apt-get -y install default-mysql-client pdns-server pdns-backend-mysql && \
+    pip install pipenv
+RUN locale-gen en_US.UTF-8
+RUN useradd --uid=1001 --create-home isucon
+USER isucon
+
+RUN mkdir -p /home/isucon/webapp/python
+WORKDIR /home/isucon/webapp/python
+COPY --chown=isucon:isucon Pipfile /home/isucon/webapp/python/
+COPY --chown=isucon:isucon Pipfile.lock /home/isucon/webapp/python/
+RUN pipenv install
+COPY --chown=isucon:isucon models.py /home/isucon/webapp/python/
+COPY --chown=isucon:isucon app.py /home/isucon/webapp/python/
+
+# ENV GOPATH=/home/isucon/tmp/go
+# ENV GOCACHE=/home/isucon/tmp/go/.cache
+
+ENV LANG en_US.UTF-8
+ENV LANGUAGE en_US:en
+ENV LC_ALL en_US.UTF-8
+
+EXPOSE 8080
+CMD ["pipenv", "run", "python", "app.py"]

webapp/python/Pipfile

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+[[source]]
+url = "https://pypi.org/simple"
+verify_ssl = true
+name = "pypi"
+
+[packages]
+flask = "*"
+pymysql = "*"
+bcrypt = "*"
+sqlalchemy = "<2.0.0"
+mysql-connector-python = "*"
+
+[dev-packages]
+flake8 = "*"
+isort = "*"
+black = "*"
+
+[requires]
+python_version = "3.12"
+python_full_version = "3.12.0"