pypi-requires.py: List packages dependencies using pypi API

pypi-requires.py

import sys
import json
import requests
from pprint import pprint


def main() -> int:
    if sys.argv[0] == 1:
        print(f"Usage: {sys.argv[0]} <package==version>|<package>|<package> <version>")
        return 1

    if "==" in sys.argv[1]:
        name, version = sys.argv[1].split("==")
    else:
        name = sys.argv[1]
        version = sys.argv[2] or None

    # name = 'prefect'
    # version = '2.5.0'
    if version is None:
        url = f'https://pypi.python.org/pypi/{name}/json'
    else:
        url = f'https://pypi.python.org/pypi/{name}/{version}/json'

    response = requests.get(url)
    response.raise_for_status()
    data = response.json()
    for req in data['info']['requires_dist']:
        if "extra == 'dev'" in req:
            continue
        print(req)

    return 0


if __name__ == '__main__':
    sys.exit(main())

Check dependencies of paramiko

• version 2.0.0

$ python3 pypi-requires.py paramiko==2.0.0
cryptography (>=1.1)
pyasn1 (>=0.1.7)

• version 3.4.0

$ python3 pypi-requires.py paramiko==3.4.0
bcrypt (>=3.2)
cryptography (>=3.3)
pynacl (>=1.5)
pyasn1 (>=0.1.7) ; extra == 'all'
invoke (>=2.0) ; extra == 'all'
gssapi (>=1.4.1) ; (platform_system != "Windows") and extra == 'all'
pywin32 (>=2.1.8) ; (platform_system == "Windows") and extra == 'all'
pyasn1 (>=0.1.7) ; extra == 'gssapi'
gssapi (>=1.4.1) ; (platform_system != "Windows") and extra == 'gssapi'
pywin32 (>=2.1.8) ; (platform_system == "Windows") and extra == 'gssapi'
invoke (>=2.0) ; extra == 'invoke'