参考：
Quickstart — Flask-SQLAlchemy Documentation (2.1)
去写Flask的应用代码：
from flask import Flask, g, request, make_response from flask import abort, redirect, url_for # from flask import jsonify from flask_sqlalchemy import SQLAlchemy app = Flask(__name__, instance_relative_config=True) app.debug = app.config[“FLASK_DEBUG”] app.config.from_object(‘config’) # load config.py app.config.from_pyfile(‘config.py’) db = SQLAlchemy(app) app.logger.debug(“db=%s”, db) |
运行出错：
(SIPEvents) ➜ SIPEvents gunicorn -w 4 -b 127.0.0.1:8080 app:app [2016-08-22 21:16:24 +0000] [6787] [INFO] Starting gunicorn 19.6.0 [2016-08-22 21:16:24 +0000] [6787] [INFO] Listening at: http://127.0.0.1:8080 (6787) [2016-08-22 21:16:24 +0000] [6787] [INFO] Using worker: sync [2016-08-22 21:16:24 +0000] [6792] [INFO] Booting worker with pid: 6792 [2016-08-22 21:16:24 +0000] [6794] [INFO] Booting worker with pid: 6794 [2016-08-22 21:16:24 +0000] [6792] [ERROR] Exception in worker process Traceback (most recent call last): File “/root/Envs/SIPEvents/lib/python2.7/site-packages/gunicorn/arbiter.py”, line 557, in spawn_worker worker.init_process() File “/root/Envs/SIPEvents/lib/python2.7/site-packages/gunicorn/workers/base.py”, line 126, in init_process self.load_wsgi() File “/root/Envs/SIPEvents/lib/python2.7/site-packages/gunicorn/workers/base.py”, line 136, in load_wsgi self.wsgi = self.app.wsgi() File “/root/Envs/SIPEvents/lib/python2.7/site-packages/gunicorn/app/base.py”, line 67, in wsgi self.callable = self.load() File “/root/Envs/SIPEvents/lib/python2.7/site-packages/gunicorn/app/wsgiapp.py”, line 65, in load return self.load_wsgiapp() File “/root/Envs/SIPEvents/lib/python2.7/site-packages/gunicorn/app/wsgiapp.py”, line 52, in load_wsgiapp return util.import_app(self.app_uri) File “/root/Envs/SIPEvents/lib/python2.7/site-packages/gunicorn/util.py”, line 357, in import_app __import__(module) File “/usr/share/nginx/html/SIPEvents/app.py”, line 8, in <module> from flask_sqlalchemy import SQLAlchemy ImportError: No module named flask_sqlalchemy |
搜：
ImportError: No module named flask_sqlalchemy
python – ImportError: No module named sqlalchemy – Stack Overflow
说是：
zsh时，从命令行运行，需要先导入：
import sqlalchemy
Flask-SQLAlchemy — Flask-SQLAlchemy Documentation (2.1)
不管了，安装好了：
pip install Flask-SQLAlchemy
(SIPEvents) ➜ SIPEvents pip install Flask-SQLAlchemy Collecting Flask-SQLAlchemy Downloading Flask-SQLAlchemy-2.1.tar.gz (95kB) 100% |████████████████████████████████| 102kB 33kB/s Requirement already satisfied (use –upgrade to upgrade): Flask>=0.10 in /root/Envs/SIPEvents/lib/python2.7/site-packages (from Flask-SQLAlchemy) Collecting SQLAlchemy>=0.7 (from Flask-SQLAlchemy) Downloading SQLAlchemy-1.0.14.tar.gz (4.8MB) 100% |████████████████████████████████| 4.8MB 47kB/s Requirement already satisfied (use –upgrade to upgrade): itsdangerous>=0.21 in /root/Envs/SIPEvents/lib/python2.7/site-packages (from Flask>=0.10->Flask-SQLAlchemy) Requirement already satisfied (use –upgrade to upgrade): Jinja2>=2.4 in /root/Envs/SIPEvents/lib/python2.7/site-packages (from Flask>=0.10->Flask-SQLAlchemy) Requirement already satisfied (use –upgrade to upgrade): Werkzeug>=0.7 in /root/Envs/SIPEvents/lib/python2.7/site-packages (from Flask>=0.10->Flask-SQLAlchemy) Requirement already satisfied (use –upgrade to upgrade): click>=2.0 in /root/Envs/SIPEvents/lib/python2.7/site-packages (from Flask>=0.10->Flask-SQLAlchemy) Requirement already satisfied (use –upgrade to upgrade): MarkupSafe in /root/Envs/SIPEvents/lib/python2.7/site-packages (from Jinja2>=2.4->Flask>=0.10->Flask-SQLAlchemy) Building wheels for collected packages: Flask-SQLAlchemy, SQLAlchemy Running setup.py bdist_wheel for Flask-SQLAlchemy … done Stored in directory: /root/.cache/pip/wheels/cf/9f/1b/390c152e645c6e300fda9ed9c678c6e22717a3020fd02acb4d Running setup.py bdist_wheel for SQLAlchemy … done Stored in directory: /root/.cache/pip/wheels/b6/33/08/eb7224f6053d6abd5bbdd41628505b5af881a6b7828060a6b3 Successfully built Flask-SQLAlchemy SQLAlchemy Installing collected packages: SQLAlchemy, Flask-SQLAlchemy Successfully installed Flask-SQLAlchemy-2.1 SQLAlchemy-1.0.14 |
然后接着去试试
然后就可以了。
［总结］
此处出错：
ImportError: No module named flask_sqlalchemy
的解决办法是：
去安装Flask-SQLAlchemy即可：
pip install Flask-SQLAlchemy |
或：
easy_install Flask-SQLAlchemy
转载请注明：在路上 » ［已解决］Flask运行出错：ImportError No module named flask_sqlalchemy