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我是python的新手。我必须用PostgreSQL作为数据库开发一个简单的Flask应用程序(在我的本地Ubuntu 16.4中)。Flask&Alchemy - (psycopg2.OperationalError)致命错误:密码验证失败
我安装的pgAdmin,烧瓶,SQLAlchemy的和Postgres,也这是我的应用程序代码:
from flask import Flask
from flask_sqlalchemy import SQLAlchemy
app = Flask(__name__)
app.config['SQLALCHEMY_DATABASE_URI'] = 'postgresql://dbUserName:[email protected]/dbName'
db = SQLAlchemy(app)
class User(db.Model):
id = db.Column(db.Integer, primary_key=True)
username = db.Column(db.String(80), unique=True)
email = db.Column(db.String(120), unique=True)
def __init__(self, username, email):
self.username = username
self.email = email
def __repr__(self):
return '<User %r>' % self.username
@app.route('/')
def index():
return "Hello Flask"
if __name__ == "__main__":
app.run()
我也创建pgAdmin的数据库和新用户(以及在我的代码相关的变量替换它们)但是当我尝试在python shell中测试这段代码时,我发现错误。
我的Python代码:
from app import db
结果:
/home/user/point2map2/venv/lib/python3.5/site-packages/flask_sqlalchemy/__init__.py:839: FSADeprecationWarning: SQLALCHEMY_TRACK_MODIFICATIONS adds significant overhead and will be disabled by default in the future. Set it to True or False to suppress this warning.
'SQLALCHEMY_TRACK_MODIFICATIONS adds significant overhead and '
然后:
db.create_all()
结果:
(psycopg2.OperationalError) FATAL: password authentication failed for user "dbUserName"
FATAL: password authentication failed for user "dbUserName"
很多论坛搜索后,我发现这个指南:
在你的pg_hba.conf
# IPv4 local connections: # TYPE DATABASE USER CIDR-ADDRESS METHOD host all all 127.0.0.1/32 trust
但它不是为我工作。
这听起来像你需要为你的新的Postgres http://stackoverflow.com/questions/2172569/创建用户解决怎么办,我登录和验证身份到PostgreSQL的-后-A-全新安装 – brennan