烧瓶外壳无法在模块"flask"中找到烧瓶应用程序或工厂

Question

我正在学习第7章中的"flask_web_development"，该章将应用程序封装到工厂

def create_app(config_name):
app = Flask(__name__)
app.config.from_object(config[config_name])
config[config_name].init_app(app)
bootstrap.init_app(app)
mail.init_app(app)
moment.init_app(app)
db.init_app(app)
from .main import main as main_blueprint
app.register_blueprint(main_blueprint)
return app

运行烧瓶外壳时报告错误

In [21]: !flask shell                    
Usage: flask shell [OPTIONS] [IPYTHON_ARGS]...
Error: Failed to find Flask application or factory in module "flask". Use "FLASK_APP=flask:name to specify one.

烧瓶运行正常

In [19]: !export FLASK_APP=flask.py; export FLASK_DEBUG=1                          
In [20]: !flask run &                    
In [21]:  * Serving Flask app "flask.py" (lazy loading)
* Environment: production
WARNING: This is a development server. Do not use it in a production deployment.
Use a production WSGI server instead.
* Debug mode: on
* Running on http://127.0.0.1:5000/ (Press CTRL+C to quit)
* Restarting with stat
* Debugger is active!
* Debugger PIN: 301-086-427

flask shell在接下来的章节中运行良好，我将其设置为带有"flask shell ipython"的ipython

的详细信息

In [26]: !export FLASK_APP=flasky.py     
In [27]: !flask shell                    
Usage: flask shell [OPTIONS] [IPYTHON_ARGS]...
Error: Failed to find Flask application or factory in module "flask". Use "FLASK_APP=flask:name to specify one.

和flasky.py

In [28]: !cat flasky.py                  
import os
import click
from flask_migrate import Migrate
from app import create_app, db
from app.models import User, Role
app = create_app(os.getenv('FLASK_CONFIG') or 'default')
migrate = Migrate(app, db)

@app.shell_context_processor
def make_shell_context():
return dict(db=db, User=User, Role=Role)

@app.cli.command()
@click.argument('test_names', nargs=-1)
def test(test_names):
"""Run the unit tests."""
import unittest
if test_names:
tests = unittest.TestLoader().loadTestsFromNames(test_names)
else:
tests = unittest.TestLoader().discover('tests')
unittest.TextTestRunner(verbosity=2).run(tests)

Answer 1

在"烧瓶运行&"之前您正在导出"FLASK_APP=烧瓶.py">

在"烧瓶外壳"之前，您正在导出"flask_APP=flasky.py">

这两个名字都不一样。