Question

我正在尝试运行数据库并使用以下代码输入数据库来运行数据库。即使我做了正确的条目，我仍然会收到错误“没有这样的表：用户”

from flask import Flask, request, flash, url_for, redirect
from flask.ext.sqlalchemy import SQLAlchemy
from spello import app
from datetime import datetime

app.config['SQLALCHEMY_DATABASE_URI'] = 'sqlite:///spello.db'
db = SQLAlchemy(app)


app.config['SQLALCHEMY_DATABASE_URI'] = 'sqlite:///spello.db'
db = SQLAlchemy(app)

class User(db.Model):

    id = db.Column(db.Integer , primary_key = True)  #defines the id
    email = db.Column(db.String(90))  #defines the Developer's email ID
    URL = db.Column(db.String(120)) #defines the URL

    # created_on = db.Column(db.DateTime)

    def __init__(self, email, URL):
        self.email = email
        self.URL = URL

    # self.creation = datetime.now()

    def __repr__(self):
        return "<User %r>" % self.email

我在命令行中打开python并输入以下代码

>>> from spello import models
>>> from spello.models import db,User
>>> db.create_all()
>>> u = User('a@b.com','www.asd.com')
>>> db.session.add(u)
>>> db.session.commit()

但是当我在命令行中运行sqlite3来检查数据库是否已创建时，我收到以下错误

(spello)$ sqlite3
sqlite> select * from user;
Error: no such table: user

可以请sm1告诉我哪里出错了吗？

Answer 1

sqlite3工具的最新版本实际上是：

$ sqlite3
SQLite version 3.8.4.3 2014-04-03 16:53:12
Enter ".help" for usage hints.
Connected to a transient in-memory database.
Use ".open FILENAME" to reopen on a persistent database.
sqlite>

要打开数据库，您必须实际打开它：

$ sqlite3 /wherever/you/have/put/spello.db

错误：没有这样的表无法创建数据库

1 个答案: