config/firebase_cfg.py

import firebase_admin
from firebase_admin import credentials, storage
import os
import json

def init_firebase():
    if not firebase_admin._apps:  
        firebase_creds = os.getenv("FIREBASE_CREDENTIALS")
        cred_dict = json.loads(firebase_creds)
        cred = credentials.Certificate(cred_dict)
        firebase_admin.initialize_app(cred, {
            'storageBucket': 'paper-trans-3e6b8.appspot.com'
        })