为什么Python Flask中的Blueprint不能工作，尽管看起来很简单？
我在做一个项目。现在我决定用blueprint把它分成几个小部分。根据输出，我的变量modapi不是可访问的app.py。输出结果显示在帖子的最后。
C:.
│ app.py
│ appaux.py
│ db.yaml
│
├───.vscode
│ settings.json
│
├───blue
│ │ __init__.py
│ │
│ ├───api
│ │ │ forms.py
│ │ │ routes.py
│ │ │ utils.py
│ │ │ __init__.pyapp.py
from blue import create_app,create_MySQL_connection
from flask import Flask, render_template, url_for, redirect, jsonify
app = create_app()
mysql = create_MySQL_connection(app)
if __name__ == '__main__':
app.run(debug=True)蓝色/初始化.py
from flask import Flask
from flask_mysqldb import MySQL
import yaml
from flask_cors import CORS
def create_app():
app = Flask(__name__, instance_relative_config=True)
app.config.from_object(__name__)
db = yaml.load(open('db.yaml'))
app.config['MYSQL_HOST'] = db['mysql_host']
app.config['MYSQL_USER'] = db['mysql_user']
app.config['MYSQL_PASSWORD'] = db['mysql_password']
app.config['MYSQL_DB'] = db['mysql_db']
#mysql = MySQL(app)
CORS(app)
from blue.api.routes import modapi
# from blue.site.routes import mod
# app.register_blueprint(site.routes.mod)
app.register_blueprint(modapi, url_prefix='/api')
from blue.api import routes
app.register_blueprint(routes)
return app
def create_MySQL_connection(app):
return MySQL(app)blue/routes.py
from app import Flask, render_template, url_for, redirect, jsonify
#from flask import Flask, render_template, url_for, redirect, jsonify
from Flask import Blueprint
#from blue import create_app
from flask_mysqldb import MySQL
from flask import request, Response
import json
import yaml
from flask_cors import CORS
from app import mysql
from blue.api.utils import extract_tables
from blue.api.forms import *
# IMPORTES NECESSARIOS PARA A COMPARACAO ATRAVES DE DATASET DOS COMANDOS DE SQL
import sqlparse
import MySQLdb._mysql
import pandas
import datacompy
from mysql.connector import Error
modapi = Blueprint('api', __name__)
@modapi.route('/v1.0/alunos/', methods=['POST', 'GET'])
def alunos():
...C:\Users\joaog\Documents\tryflask\blue__init__.py:10: YAMLLoadWarning:在没有Loader=的情况下调用yaml.load() ...不推荐使用，因为默认的Loader是不安全的。有关详细信息，请阅读https://msg.pyyaml.org/load。db = yaml.load(open('db.yaml'))回溯(最近一次调用)：文件"app.py"，第4行，在app = create_app()文件"C:\Users\joaog\Documents\tryflask\blue__init__.py"，第19行，从blue.api.routes导入modapi文件"C:\Users\joaog\Documents\tryflask\blue\api\routes.py"，第1行，从应用程序导入Flask，render_template，url_for，重定向，jsonify文件"C:\Users\joaog\Documents\tryflask\app.py"，第4行，位于app = create_app()文件"C:\Users\joaog\Documents\tryflask\blue__init__.py"，第19行，来自blue.api.routes导入modapi的create_app格式
modapi:无法从'blue.api.routes‘(C:\Users\joaog\Documents\tryflask\blue\api\routes.py)导入名称'modapi’
回答 1
Stack Overflow用户
发布于 2019-06-10 08:15:25
我认为您在导入路由时是错误的。
请看一看
蓝色/初始化.py
from flask import Flask
app = Flask(__name__)
app.config['SECRET_KEY'] = 'qqwer%t&'
from blue.api.routes import modapi
app.register_blueprint(modapi, url_prefix='/api')blue/api/routes.py
from flask import Blueprint
modapi = Blueprint('api', __name__)
@modapi.route('/')
def alunos():
return 'Hello World alunos'应该是工作
https://stackoverflow.com/questions/56518690
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