为什么即使在系统上安装了 sql 炼金术，我也会收到以下错误？ ModuleNotFoundError：没有名为“flask_sqlalchemy”的模块

Question

from flask import Flask, redirect, url_for, render_template
from flask_sqlalchemy import SQLAlchemyapp = Flask(__name__)
db = SQLAlchemy(app)
class error_db(db.model):
    Zendesk_Ticket_No = db.Column(db.Integer, primary_key = True)
    Client_Name = db.column(db.String(120))
    Carrier_Name = db.column(db.String(120))
    Number_of_Records = db.column(db.String(120))
    Plan_Type = db.column(db.String(120))
    Manual_or_Macro_Error_Type = db.column(db.String(120))
    System_Bug = db.column(db.String(120))
    To_be_corrected_end = db.column(db.String(120))
    Status = db.column(db.String(120))
    EDI_File_Date = db.column(db.String(120))
    Received_Date = db.column(db.String(120))
    Completed_Date = db.column(db.String(120))
    Next_EDI_File_Due_Date = db.column(db.String(120))
    Comment = db.column(db.String(120))
    File_Worked_Upon_By = db.column(db.String(120))
    Month = db.column(db.String(120))
@app.route("/")
def home():
    return render_template("index.html")if __name__ == "__main__":
    db.create_all()
    app.run()

当我运行这段代码时，我收到错误 ModuleNotFoundError: No module named 'flask_sqlalchemy'，当我尝试 pip install sqlalchemy 时，显示要求已经满足。

Answer 1

您是否使用pip install Flask-SQLAlchemy ？ SQLAlchemy 与 Flask-SQLAlchemy 不同。