没有名为“ flask_sqlalchemy”的模块

Question

我正在使用从flask_sqlalchemy导入SQLAlchemy。该代码在我的控制台中显示错误 从flask_sqlalchemy导入SQLAlchemy ModuleNotFoundError：没有名为“ flask_sqlalchemy”的模块，而我已经通过

安装了flask-sqlalchemy

pip安装flask-sqlalchemy。所有代码都在这里

from flask import Flask, render_template, request
from flask_sqlalchemy import SQLAlchemy
app = Flask(__name__)
app.config['SQLALCHEMY_DATABASE_URI'] = 'mysql://root:@localhost/clean-blog'
db = SQLAlchemy(app)

class Contacts(db.Model):
    srno = db.Column(db.Integer, primary_key=True)
    name = db.Column(db.String(80), nullable=False)
    email = db.Column(db.String(50), nullable=False)
    phone = db.Column(db.String(20), nullable=False)
    message = db.Column(db.String(500), nullable=False)