😸
Pythonパッケージのライセンス情報をCSVに出力する
目的
Pythonパッケージの以下の情報をCSVに出力する方法を検討する
- パッケージ名
- バージョン
- ホームページ
- ライセンス
実験環境
- MacOS
- python3.9
パッケージ一覧の取得方法
pipコマンドでインストールしたパッケージの一覧は下記のファイルで取得可能
pip list
ライセンス情報は出力されない模様
パッケージの詳細情報の取得方法
pip showコマンドで個別のパッケージの詳細情報を表示できる。
%pip show requests
Name: requests
Version: 2.26.0
Summary: Python HTTP for Humans.
Home-page: https://requests.readthedocs.io
Author: Kenneth Reitz
Author-email: me@kennethreitz.org
License: Apache 2.0
Location: /usr/local/lib/python3.9/site-packages
Requires: certifi, charset-normalizer, idna, urllib3
Required-by: bert-score, folium, gdown, google-api-core, googlemaps, huggingface-hub, jupyterlab-server, pystac-client, transformers
ライセンス情報は出力されるが、パッケージを個別に指定する必要がある
pypiに登録されている情報をJSONで取得する方法
pypiに登録されている情報は以下の形式でJSON形式として取得できる。
例： awslogs 0.14.0の情報
jsonの内容
{
"info": {
"author": "Jorge Bastida",
"author_email": "me@jorgebastida.com",
"bugtrack_url": null,
"classifiers": [
"Development Status :: 4 - Beta",
"Environment :: Web Environment",
"Intended Audience :: Developers",
"License :: OSI Approved :: BSD License",
"Operating System :: OS Independent",
"Programming Language :: Python :: 3",
"Programming Language :: Python :: 3.5",
"Programming Language :: Python :: 3.6",
"Programming Language :: Python :: 3.7",
"Programming Language :: Python :: 3.8",
"Topic :: Utilities"
],
"description": "awslogs is a simple command line tool to read aws cloudwatch logs.\n\n\n",
"description_content_type": "",
"docs_url": null,
"download_url": "",
"downloads": {
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"last_month": -1,
"last_week": -1
},
"home_page": "https://github.com/jorgebastida/awslogs",
"keywords": "aws logs cloudwatch",
"license": "BSD",
"maintainer": "",
"maintainer_email": "",
"name": "awslogs",
"package_url": "https://pypi.org/project/awslogs/",
"platform": "any",
"project_url": "https://pypi.org/project/awslogs/",
"project_urls": {
"Homepage": "https://github.com/jorgebastida/awslogs"
},
"release_url": "https://pypi.org/project/awslogs/0.14.0/",
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"yanked": false,
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ライセンスを調べるツールを導入する方法
以下のツールをインストールすることでライセンス情報を調べることが可能
$pip install -U pip-licenses
$pip-licenses
以下のコードでローカルのパッケージの情報を抽出している模様。
自力でパッケージ情報をCSVに出力するコード例
ローカルのパッケージあるいはPipfile.lockに記載されたパッケージの情報をCSVに出力するコード例
import subprocess
import requests
import sys
import csv
import argparse
import json
def find_classifiers(classifiers, key):
for item in classifiers:
if key in item:
return item
return None
def get_pypi(module_name, version):
res = requests.get(f'https://pypi.org/pypi/{module_name}/{version}/json')
if res.status_code != 200:
print(
f'not found {module_name}/{version} in pypi.org',
file=sys.stderr
)
return {
'home_page': '',
'license': ''
}
data = res.json()
classifiers = data['info']['classifiers']
home_page = data['info']['home_page']
if not home_page:
home_page = data['info']['project_url']
license = data['info']['license']
if not license:
license = find_classifiers(classifiers, 'License')
return {
'home_page': home_page,
'license': license
}
def analyze_local(pipcmd):
process = subprocess.run([pipcmd, 'list', '--format=json'], capture_output=True)
output = process.stdout.decode('utf-8')
lines = json.loads(output)
for item in lines:
yield {
'module_name': item['name'],
'version': item['version']
}
def analyze_pipfile_lock(pipfile_lock_path):
with open(pipfile_lock_path, 'r', encoding='utf-8') as fr:
lock_data = json.load(fr)
for key in lock_data.keys():
if key == '_meta':
continue
for module_name in lock_data[key].keys():
version = lock_data[key][module_name]['version'][2:]
yield {
'module_name': module_name,
'version': version
}
parser = argparse.ArgumentParser(description="pythonのライブラリ情報をCSVに出力する")
parser.add_argument("output_path", type=str, help="出力CSVパス")
parser.add_argument(
"--pip_cmd", type=str, default="pip", help="pipコマンド名"
)
parser.add_argument(
"--pipfile_lock_path", type=str, default="", help="解析対象のPipfile.lockのパス"
)
args = parser.parse_args()
with open(args.output_path, "w", encoding="utf-8", errors="ignore") as fw:
writer = csv.writer(fw, quoting=csv.QUOTE_ALL)
if args.pipfile_lock_path:
items = analyze_pipfile_lock(args.pipfile_lock_path)
else:
items = analyze_local(args.pip_cmd)
for item in items:
module_name = item['module_name']
version = item['version']
data = get_pypi(module_name, version)
writer.writerow([
module_name,
version,
data['home_page'],
data['license']
])
実行方法
ローカルのパッケージ情報をoutput.csvに出力する
python3 check_local.py output.csv
指定のPipfile.lock中のパッケージ情報をoutput2.csvに出力する
python3 check_local.py output2.csv --pipfile_lock_path="hogehoge/Pipfile.lock"
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