python-flask 代码本地运行可以，但是在gunicorn上运行报错

qq_40169895 2020-04-25 08:24:06

from flask_sqlalchemy import SQLAlchemy
from flask import Flask
from datetime import datetime
app = Flask(__name__)
app.config['SQLALCHEMY_DATABASE_URI'] = 'mysql+pymysql://root:xxxxxxxx@xxx:3306/book'
app.config['SQLALCHEMY_TRACK_MODIFICATIONS'] = False
# 数据库操作时是否显示原始SQL语句，一般都是打开的，因为我们后台要日志
app.config['SQLALCHEMY_ECHO'] = True
db = SQLAlchemy(app)
class Book(db.Model):
__tablename__ = 'book'
id=db.Column(db.Integer,primary_key=True,autoincrement=True)
title = db.Column(db.String(50),nullable=False)
db.create_all()

@app.route('/')
def index():
return "hello"
if __name__ == '__main__':
app.run(debug=True)
#db = SQLAlchemy()

本地运行可以，gunicorn上运行时报错
Exception in worker process
Traceback (most recent call last):
File "/usr/local/python3/lib/python3.7/site-packages/gunicorn/arbiter.py", line 583, in spawn_worker
worker.init_process()
File "/usr/local/python3/lib/python3.7/site-packages/gunicorn/workers/base.py", line 119, in init_process
self.load_wsgi()
File "/usr/local/python3/lib/python3.7/site-packages/gunicorn/workers/base.py", line 144, in load_wsgi
self.wsgi = self.app.wsgi()
File "/usr/local/python3/lib/python3.7/site-packages/gunicorn/app/base.py", line 67, in wsgi
self.callable = self.load()
File "/usr/local/python3/lib/python3.7/site-packages/gunicorn/app/wsgiapp.py", line 49, in load
return self.load_wsgiapp()
File "/usr/local/python3/lib/python3.7/site-packages/gunicorn/app/wsgiapp.py", line 39, in load_wsgiapp
return util.import_app(self.app_uri)
File "/usr/local/python3/lib/python3.7/site-packages/gunicorn/util.py", line 358, in import_app
mod = importlib.import_module(module)
File "/usr/local/python3/lib/python3.7/importlib/__init__.py", line 127, in import_module
return _bootstrap._gcd_import(name[level:], package, level)
File "<frozen importlib._bootstrap>", line 1006, in _gcd_import
File "<frozen importlib._bootstrap>", line 983, in _find_and_load
File "<frozen importlib._bootstrap>", line 967, in _find_and_load_unlocked
File "<frozen importlib._bootstrap>", line 677, in _load_unlocked
File "<frozen importlib._bootstrap_external>", line 728, in exec_module
File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
File "/opt/ding/ext.py", line 15, in <module>
db.create_all()
File "/usr/local/python3/lib/python3.7/site-packages/flask_sqlalchemy/__init__.py", line 1033, in create_all
self._execute_for_all_tables(app, bind, 'create_all')
File "/usr/local/python3/lib/python3.7/site-packages/flask_sqlalchemy/__init__.py", line 1025, in _execute_for_all_tables
op(bind=self.get_engine(app, bind), **extra)
File "/usr/local/python3/lib/python3.7/site-packages/flask_sqlalchemy/__init__.py", line 956, in get_engine
return connector.get_engine()
File "/usr/local/python3/lib/python3.7/site-packages/flask_sqlalchemy/__init__.py", line 560, in get_engine
options = self.get_options(sa_url, echo)
File "/usr/local/python3/lib/python3.7/site-packages/flask_sqlalchemy/__init__.py", line 581, in get_options
options.update(self._app.config['SQLALCHEMY_ENGINE_OPTIONS'])
TypeError: 'bool' object is not iterable

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