Python example for using docker-credential-osxkeychain

read_docker_credentials.py

#https://github.com/docker/docker-credential-helpers
import json
from subprocess import PIPE, STDOUT, Popen

keychain_cmd = ["docker-credential-osxkeychain", "get"]
p = Popen(keychain_cmd, stdout=PIPE, stdin=PIPE, stderr=STDOUT)
credentials_json, _ = p.communicate(input="#### auths name from .docker/config.json ####".encode('utf-8'))
credentials = json.loads(credentials_json.decode('utf-8'))
print(credentials['Username'], credentials['Secret'])