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POBad File Descriptor - Heroku Foreman
 

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    <p>I'm trying to run <em>hello.py</em> from <a href="https://devcenter.heroku.com/articles/python" rel="nofollow noreferrer">this Python Heroku tutorial</a>. My problems began after running this command: <code>foreman start</code>. I got the following error even though I installed the <a href="https://toolbelt.heroku.com/" rel="nofollow noreferrer">Heroku Toolbelt</a>:</p> <blockquote> <p>foreman is not recognized as an internal or external command, operable program or batch file</p> </blockquote> <p>So I added the location of the foreman file (version 0.63.0) to my <em>path</em>:</p> <blockquote> <p>C:\Program Files (x86)\Heroku\ruby-1.9.2\bin</p> </blockquote> <p>and restarted the command prompt and reran <code>foreman start</code>. Now, I'm getting this error:</p> <pre><code>Microsoft Windows [Version 6.2.9200] (c) 2012 Microsoft Corporation. All rights reserved. C:\Users\me\Desktop\Code\heroku_python_app&gt;venv\Scripts\activate (venv) C:\Users\me\Desktop\Code\heroku_python_app&gt;foreman start Bad file descriptor C:/Program Files (x86)/Heroku/ruby-1.9.2/lib/ruby/gems/1.9.1/gems/foreman-0.63.0 /lib/foreman/engine.rb:372:in `read_nonblock' C:/Program Files (x86)/Heroku/ruby-1.9.2/lib/ruby/gems/1.9.1/gems/foreman-0.63.0 /lib/foreman/engine.rb:372:in `block (2 levels) in watch_for_output' C:/Program Files (x86)/Heroku/ruby-1.9.2/lib/ruby/gems/1.9.1/gems/foreman-0.63.0 /lib/foreman/engine.rb:368:in `loop' C:/Program Files (x86)/Heroku/ruby-1.9.2/lib/ruby/gems/1.9.1/gems/foreman-0.63.0 /lib/foreman/engine.rb:368:in `block in watch_for_output' 12:57:38 web.1 | exited with code 1 12:57:38 system | sending SIGKILL to all processes (venv) C:\Users\me\Desktop\Code\heroku_python_app&gt; </code></pre> <p><strong>hello.py</strong></p> <pre><code>import os from flask import Flask app = Flask(__name__) @app.route('/') def hello(): return 'Hello World' </code></pre> <p><strong>Procfile</strong> </p> <pre><code>web: gunicorn hello:app </code></pre> <p><strong>EDIT 1</strong></p> <p>After reading <a href="https://stackoverflow.com/questions/15399637/cant-start-foreman-in-heroku-tutorial-using-python">this answer</a>, I did the following:</p> <pre><code>gem uninstall foreman gem install foreman -v 0.61.0 </code></pre> <p>However, when I reran <code>foreman start</code> I'm getting this error now</p> <pre><code>(venv) C:\Users\me\Desktop\Code\heroku_python_app&gt;foreman start 14:13:20 web.1 | started with pid 252 14:13:20 web.1 | exited with code 1 14:13:20 system | sending SIGKILL to all processes 14:13:20 | Traceback (most recent call last): 14:13:20 | File "C:\Users\me\Desktop\Code\heroku_python_app\venv\Scri pts\gunicorn-script.py", line 9, in &lt;module&gt; (venv) C:\Users\me\Desktop\Code\heroku_python_app&gt; </code></pre> <p>Any assistance will be really appreciated. Thanks in advance.</p>
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    1. COI'm beginning to realize that Heroku is not a popular topic on SO at all! It looks so cool and interesting to me, not sure why no one else seems to think so.
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    2. COCan you run the web command from your Procfile without Foreman?
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    3. CO+1 Thanks for your reply @georgebrock . How do I run the web command from the Procfile without Foreman? The tutorial does not cover this. Also, does Gunicorn work on Windows? Because when I went to the Gunicorn site, it said it was for Unix.
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