python - "No such file or directory"与 firebase_admin python 库

Question

我想使用 python 官方库 (firebase_admin) 而不是 pyrebase 或 python-firebase 通过 Firebase 数据库检索一些数据>.

我尝试执行以下代码行:

from firebase_admin import db
from firebase_admin import credentials
import firebase_admin

cred = credentials.Certificate('https://project_name.firebaseio.com/.json')
firebase_admin.initialize_app(cred)

result = db.Query.get()

但是我收到以下错误:

FileNotFoundError: [Errno 2] No such file or directory: 'https://project_name.firebaseio.com/.json'

即使当我在浏览器上输入此网址(将 project_name 替换为我的真实项目名称)时，我还是从数据库中获取了 json 数据。

如何修复此错误？

Answer 1

证书应指向包含您的凭据/证书的本地文件。相反，您将其指向数据库 URL，该 URL 不是本地文件，因此库会抛出错误。

来自documentation on initializing the Python SDK :

import firebase_admin
from firebase_admin import credentials
from firebase_admin import db

# Fetch the service account key JSON file contents
cred = credentials.Certificate('path/to/serviceAccountKey.json')

# Initialize the app with a service account, granting admin privileges
firebase_admin.initialize_app(cred, {
    'databaseURL': 'https://databaseName.firebaseio.com'
})

# As an admin, the app has access to read and write all data, regardless of Security Rules
ref = db.reference('restricted_access/secret_document')
print(ref.get())