我安装了pgadmin,Flask,sqlAlchemy和postgres,这也是我的应用代码：

from flask import Flask
from flask_sqlalchemy import sqlAlchemy

app = Flask(__name__)
app.config['sqlALCHEMY_DATABASE_URI'] = 'postgresql://dbUserName:userNamePassword@localhost/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()

我还在pgAdmin中创建了一个数据库和新用户(并在我的代码中用相关变量替换它们),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"

经过大量的论坛搜索,我找到了这个指南：

in your pg_hba.conf

06005

但它不适合我.