我在玩烧瓶，我遇到以下错误
sqlalchemy.exc.OperationalError
sqlalchemy.exc.OperationalError: (sqlite3.OperationalError) no such table: users
[SQL: SELECT users.id AS users_id, users.name AS users_name, users.email AS users_email
FROM users
WHERE users.name = ?
LIMIT ? OFFSET ?]
[parameters: ('rep', 1, 0)]
(Background on this error at: http://sqlalche.me/e/e3q8)
Traceback (most recent call last)
File "/var/www/html/flask/flask/lib/python3.7/site-packages/sqlalchemy/engine/base.py", line 1284, in _execute_context
cursor, statement, parameters, context
File "/var/www/html/flask/flask/lib/python3.7/site-packages/sqlalchemy/engine/default.py", line 590, in do_execute
cursor.execute(statement, parameters)
The above exception was the direct cause of the following exception:
File "/var/www/html/flask/flask/lib/python3.7/site-packages/flask/app.py", line 2464, in __call__
return self.wsgi_app(environ, start_response)
File "/var/www/html/flask/flask/lib/python3.7/site-packages/flask/app.py", line 2450, in wsgi_app
response = self.handle_exception(e)
File "/var/www/html/flask/flask/lib/python3.7/site-packages/flask/app.py", line 1867, in handle_exception
reraise(exc_type, exc_value, tb)
File "/var/www/html/flask/flask/lib/python3.7/site-packages/flask/_compat.py", line 39, in reraise
raise value
File "/var/www/html/flask/flask/lib/python3.7/site-packages/flask/app.py", line 2447, in wsgi_app
response = self.full_dispatch_request()
File "/var/www/html/flask/flask/lib/python3.7/site-packages/flask/app.py", line 1952, in full_dispatch_request
rv = self.handle_user_exception(e)
File "/var/www/html/flask/flask/lib/python3.7/site-packages/flask/app.py", line 1821, in handle_user_exception
reraise(exc_type, exc_value, tb)
File "/var/www/html/flask/flask/lib/python3.7/site-packages/flask/_compat.py", line 39, in reraise
raise value
File "/var/www/html/flask/flask/lib/python3.7/site-packages/flask/app.py", line 1950, in full_dispatch_request
rv = self.dispatch_request()
File "/var/www/html/flask/flask/lib/python3.7/site-packages/flask/app.py", line 1936, in dispatch_request
return self.view_functions[rule.endpoint](**req.view_args)
File "/var/www/html/flask/serve.py", line 38, in login
found_user = users.query.filter_by(name=user).first()
File "/var/www/html/flask/flask/lib/python3.7/site-packages/sqlalchemy/orm/query.py", line 3375, in first
ret = list(self[0:1])
File "/var/www/html/flask/flask/lib/python3.7/site-packages/sqlalchemy/orm/query.py", line 3149, in __getitem__
return list(res)
File "/var/www/html/flask/flask/lib/python3.7/site-packages/sqlalchemy/orm/query.py", line 3481, in __iter__
return self._execute_and_instances(context)
File "/var/www/html/flask/flask/lib/python3.7/site-packages/sqlalchemy/orm/query.py", line 3506, in _execute_and_instances
result = conn.execute(querycontext.statement, self._params)
File "/var/www/html/flask/flask/lib/python3.7/site-packages/sqlalchemy/engine/base.py", line 1020, in execute
return meth(self, multiparams, params)
File "/var/www/html/flask/flask/lib/python3.7/site-packages/sqlalchemy/sql/elements.py", line 298, in _execute_on_connection
return connection._execute_clauseelement(self, multiparams, params)
File "/var/www/html/flask/flask/lib/python3.7/site-packages/sqlalchemy/engine/base.py", line 1139, in _execute_clauseelement
distilled_params,
File "/var/www/html/flask/flask/lib/python3.7/site-packages/sqlalchemy/engine/base.py", line 1324, in _execute_context
e, statement, parameters, cursor, context
File "/var/www/html/flask/flask/lib/python3.7/site-packages/sqlalchemy/engine/base.py", line 1518, in _handle_dbapi_exception
sqlalchemy_exception, with_traceback=exc_info[2], from_=e
File "/var/www/html/flask/flask/lib/python3.7/site-packages/sqlalchemy/util/compat.py", line 178, in raise_
raise exception
File "/var/www/html/flask/flask/lib/python3.7/site-packages/sqlalchemy/engine/base.py", line 1284, in _execute_context
cursor, statement, parameters, context
File "/var/www/html/flask/flask/lib/python3.7/site-packages/sqlalchemy/engine/default.py", line 590, in do_execute
cursor.execute(statement, parameters)
sqlalchemy.exc.OperationalError: (sqlite3.OperationalError) no such table: users
[SQL: SELECT users.id AS users_id, users.name AS users_name, users.email AS users_email
FROM users
WHERE users.name = ?
LIMIT ? OFFSET ?]
[parameters: ('rep', 1, 0)]
(Background on this error at: http://sqlalche.me/e/e3q8)
The debugger caught an exception in your WSGI application. You can now look at the traceback which led to the error.
To switch between the interactive traceback and the plaintext one, you can click on the "Traceback" headline. From the text traceback you can also create a paste of it. For code execution mouse-over the frame you want to debug and click on the console icon on the right side.
You can execute arbitrary Python code in the stack frames and there are some extra helpers available for introspection:
dump() shows all variables in the frame
dump(obj) dumps all that's known about the object
据说这是我的错误
found_user = users.query.filter_by(name=user).first()
这是我的代码
from flask import Flask, redirect, url_for, render_template, request, session, flash
from datetime import timedelta
from flask_sqlalchemy import SQLAlchemy
app = Flask(__name__)
app.secret_key = "secretkey"
app.config['SQLALCHEMY_DATABASE_URI'] = 'sqlite:///users.sqlite3'
app.config["SQLALCHEMY_TRACK_MODIFICATIONS"] = False
app.permanent_session_lifetime = timedelta(minutes=5)
db = SQLAlchemy(app)
class users(db.Model):
_id = db.Column("id", db.Integer, primary_key=True)
name = db.Column(db.String(100))
email = db.Column(db.String(100))
def __init__(self, name, email):
self.name = name
self.email = email
@app.route("/")
def home():
return render_template("index.html")
@app.route("/login", methods=["POST", "GET"])
def login():
if request.method == "POST":
session.permanent = True
user = request.form["nm"]
session["user"] = user
found_user = users.query.filter_by(name=user).first()
if found_user:
session["email"]= found_user.email
else:
usr = users(user, "")
db.session.add(usr)
db.session.commit()
flash("Login succesfull")
return redirect(url_for("user"))
else:
if "user" in session:
flash("Already logged in!")
return redirect(url_for("user"))
return render_template("login.html")
@app.route("/user", methods=["POST", "GET"])
def user():
email=None
if "user" in session:
user = session["user"]
if request.method == "POST":
email=request.form["email"]
session["email"]= email
found_user = users.query.filter_by(name=user).first()
found_user.email = email
db.session.commit()
flash("Email was saved!")
else:
if "email" in session:
email = session["email"]
return render_template("user.html", email=email)
else:
flash("You are not logged in")
return redirect(url_for("login"))
@app.route("/logout")
def logout():
flash("You have been logged out!", "info")
session.pop("user", None)
session.pop("email", None)
return redirect(url_for("login"))
if __name__ == "__main__":
db.create_all()
app.run(debug=True)
我不知道我在做什么错
每当我尝试登录时，都会在sqlalchemy中收到上述错误消息，但我无法弄清问题所在