无需依赖注入即可访问配置

import json
from cryptography.fernet import Fernet

# 加密
def encrypt_config(config_file, key):
    with open(config_file, 'r') as f:
        config_data = json.load(f)
    fernet = Fernet(key)
    encrypted_data = fernet.encrypt(json.dumps(config_data).encode())
    with open(config_file, 'wb') as f:
        f.write(encrypted_data)

# 解密
def decrypt_config(config_file, key):
    with open(config_file, 'rb') as f:
        encrypted_data = f.read()
    fernet = Fernet(key)
    decrypted_data = fernet.decrypt(encrypted_data)
    return json.loads(decrypted_data.decode())

# 示例
key = Fernet.generate_key()
encrypt_config('config.json', key)
config = decrypt_config('config.json', key)
print(config)

import os

def get_config():
    env = os.getenv('ENV', 'development')
    if env == 'production':
        return {'db_host': 'prod-db.example.com', 'db_port': 5432}
    elif env == 'testing':
        return {'db_host': 'test-db.example.com', 'db_port': 5432}
    else:
        return {'db_host': 'localhost', 'db_port': 5432}

config = get_config()
print(config)