Get Flask App on Heroku

看完了Heroku基本教程后还是不清楚该如何通过Flask使用；在网上找到一个教程

现将Chap4中的所有文件复制到chap6下，以此为基础

  1. 创建Procfile文件 touch Procfile
  2. 将以下信息填写入Procfile文件 web: gunicorn app:app
  3. 创建requirements.txt文件 touch requirements.txt
  4. 将目前的版本输入到requirements.txt中 pip freeze > requirements.txt

  5. 安装gunicorn并加入requirements.txt

    $ pip install gunicore
Collecting gunicorn
 Using cached gunicorn-19.6.0-py2.py3-none-any.whl
Installing collected packages: gunicorn
Successfully installed gunicorn-19.6.0
$ pip freeze > requirements.txt

  6. 创建runtime.txt并加入当前Python版本 python-3.6.0

  7. Commit change in git (也可以push到github中)

  8. 创建两个新的Heroku Apps
    • one for production
      $ heroku create weatherbyzephyr-pro
Creating ⬢ weatherbyzephyr-pro... done
https://weatherbyzephyr-pro.herokuapp.com/ | https://git.heroku.com/weatherbyzephyr-pro.git
    • one for staging
      $ heroku create weatherbyzephyr-stage
Creating ⬢ weatherbyzephyr-stage... done
https://weatherbyzephyr-stage.herokuapp.com/ | https://git.heroku.com/weatherbyzephyr-stage.git

  9. 将创建Apps添加到我的git remotes,主要一个命名为pro，另一个为stage

    $ git remote add pro [email protected]:weatherbyzephyr-pro.git
$ git remote add stage [email protected]:weatherbyzephyr-stage.git
    1. Push apps live to heroku
    $ git push stage master
$ git push pro master

    弹错，无权限；heroku login后再次尝试还是不行

    Warning: Permanently added the RSA host key for IP address '50.19.85.156' to the list of known hosts.
Permission denied (publickey).
fatal: Could not read from remote repository.

Please make sure you have the correct access rights
and the repository exists.

    在stackoverflow上找到这个问题的答案,与SSH key 有关; 另写一个教程回答,这里略过。

    (venv) Zephyr (master) project $ git push stage master
Counting objects: 2055, done.
Delta compression using up to 4 threads.
Compressing objects: 100% (2022/2022), done.
packet_write_wait: Connection to 50.19.85.154: Broken pipe   
Writing objects: 100% (2055/2055), 10.92 MiB | 31.00 KiB/s, done.
Total 2055 (delta 337), reused 0 (delta 0)
remote: Compressing source files... done.
remote: Building source:
remote:
remote: -----> Python app detected
remote: -----> Installing python-3.6.0
remote:      $ pip install -r requirements.txt
remote:        Collecting appdirs==1.4.0 (from -r /tmp/build_9f7e0f956f0068139df6e65132e52ca5/requirements.txt (line 1))
remote:          Downloading appdirs-1.4.0-py2.py3-none-any.whl
remote:        Collecting click==6.7 (from -r /tmp/build_9f7e0f956f0068139df6e65132e52ca5/requirements.txt (line 2))
remote:          Downloading click-6.7-py2.py3-none-any.whl (71kB)
remote:        Collecting Flask==0.12 (from -r /tmp/build_9f7e0f956f0068139df6e65132e52ca5/requirements.txt (line 3))
remote:          Downloading Flask-0.12-py2.py3-none-any.whl (82kB)
remote:        Collecting gunicorn==19.6.0 (from -r /tmp/build_9f7e0f956f0068139df6e65132e52ca5/requirements.txt (line 4))
remote:          Downloading gunicorn-19.6.0-py2.py3-none-any.whl (114kB)
remote:        Collecting itsdangerous==0.24 (from -r /tmp/build_9f7e0f956f0068139df6e65132e52ca5/requirements.txt (line 5))
remote:          Downloading itsdangerous-0.24.tar.gz (46kB)
remote:        Collecting Jinja2==2.9.5 (from -r /tmp/build_9f7e0f956f0068139df6e65132e52ca5/requirements.txt (line 6))
remote:          Downloading Jinja2-2.9.5-py2.py3-none-any.whl (340kB)
remote:        Collecting MarkupSafe==0.23 (from -r /tmp/build_9f7e0f956f0068139df6e65132e52ca5/requirements.txt (line 7))
remote:          Downloading MarkupSafe-0.23.tar.gz
remote:        Collecting packaging==16.8 (from -r /tmp/build_9f7e0f956f0068139df6e65132e52ca5/requirements.txt (line 8))
remote:          Downloading packaging-16.8-py2.py3-none-any.whl
remote:        Collecting pinyin==0.4.0 (from -r /tmp/build_9f7e0f956f0068139df6e65132e52ca5/requirements.txt (line 9))
remote:          Downloading pinyin-0.4.0.tar.gz (3.6MB)
remote:        Collecting pyparsing==2.1.10 (from -r /tmp/build_9f7e0f956f0068139df6e65132e52ca5/requirements.txt (line 10))
remote:          Downloading pyparsing-2.1.10-py2.py3-none-any.whl (56kB)
remote:        Collecting requests==2.13.0 (from -r /tmp/build_9f7e0f956f0068139df6e65132e52ca5/requirements.txt (line 11))
remote:          Downloading requests-2.13.0-py2.py3-none-any.whl (584kB)
remote:        Collecting six==1.10.0 (from -r /tmp/build_9f7e0f956f0068139df6e65132e52ca5/requirements.txt (line 12))
remote:          Downloading six-1.10.0-py2.py3-none-any.whl
remote:        Collecting Werkzeug==0.11.15 (from -r /tmp/build_9f7e0f956f0068139df6e65132e52ca5/requirements.txt (line 13))
remote:          Downloading Werkzeug-0.11.15-py2.py3-none-any.whl (307kB)
remote:        Installing collected packages: appdirs, click, itsdangerous, MarkupSafe, Jinja2, Werkzeug, Flask, gunicorn, six, pyparsing, packaging, pinyin, requests
remote:          Running setup.py install for itsdangerous: started
remote:            Running setup.py install for itsdangerous: finished with status 'done'
remote:          Running setup.py install for MarkupSafe: started
remote:            Running setup.py install for MarkupSafe: finished with status 'done'
remote:          Running setup.py install for pinyin: started
remote:            Running setup.py install for pinyin: finished with status 'done'
remote:        Successfully installed Flask-0.12 Jinja2-2.9.5 MarkupSafe-0.23 Werkzeug-0.11.15 appdirs-1.4.0 click-6.7 gunicorn-19.6.0 itsdangerous-0.24 packaging-16.8 pinyin-0.4.0 pyparsing-2.1.10 requests-2.13.0 six-1.10.0
remote:
remote: -----> Discovering process types
remote:        Procfile declares types -> web
remote:
remote: -----> Compressing...
remote:        Done: 75.2M
remote: -----> Launching...
remote:        Released v3
remote:        https://weatherbyzephyr-stage.herokuapp.com/ deployed to Heroku
remote:
remote: Verifying deploy.... done.
To heroku.com:weatherbyzephyr-stage.git
* [new branch]      master -> master

出现问题的

部署OK了，界面也在；但是外网API无法查询; 试错了好久 发现是r = requests.get(base_url, params=params,timeout=1)的问题，应该是heroku服务器访问有延时，导致结果搜索不出来；去掉timeout参数后便正常了

Notes

flask debug 模式

if __name__ == "__main__":
    app.debug = True
    app.run()

Chage Log

2017.02.25 Initial Draft

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