我有一个简单直接的Python Flask应用程序。我试图在Heroku上部署它。我正在使用Python 3运行时。我可以使用foreman start在本地运行它，但它无法在Heroku上构建并拒绝它。
这是日志：
Counting objects: 29, done.
Delta compression using up to 8 threads.
Compressing objects: 100% (25/25), done.
Writing objects: 100% (29/29), 6.08 KiB | 0 bytes/s, done.
Total 29 (delta 11), reused 0 (delta 0)
remote: Compressing source files... done.
remote: Building source:
remote:
remote: -----> Python app detected
remote: -----> Installing runtime (python-3.4.3)
remote: -----> Installing dependencies with pip
remote: Collecting Flask==0.9 (from -r requirements.txt (line 1))
remote: Downloading Flask-0.9.tar.gz (481kB)
remote: Complete output from command python setup.py egg_info:
remote: Traceback (most recent call last):
remote: File "<string>", line 20, in <module>
remote: File "/tmp/pip-build-r95ud3px/Flask/setup.py", line 62
remote: print "Audit requires PyFlakes installed in your system."
remote: ^
remote: SyntaxError: Missing parentheses in call to 'print'
remote:
remote: ----------------------------------------
remote: Command "python setup.py egg_info" failed with error code 1 in /tmp/pip-build-r95ud3px/Flask
remote:
remote: ! Push rejected, failed to compile Python app
remote:
remote: Verifying deploy....
remote:
remote: ! Push rejected to xxxxxxxxxxxxxxxxxx.
remote:
To https://git.heroku.com/xxxxxxxxxxxxxxxxxx.git
! [remote rejected] master -> master (pre-receive hook declined)
error: failed to push some refs to 'https://git.heroku.com/xxxxxxxxxxxxxxxxxx.git'
那么，我究竟做错了什么？
修改
文件：Procfile
web: gunicorn app:app --log-file=-
app.py是主应用程序。
文件：requirements.txt
Flask==0.9
Jinja2==2.6
Werkzeug==0.8.3
gunicorn==0.17.2
文件：runtime.txt
python-3.4.3
答案 0 :(得分：7)
Flask版本 0.9 不支持python 3，因为它读入了docs：
Flask 0.10和Werkzeug 0.9是第一个推出的版本 Python 3支持。
所以你应该使用 Flask 0.10.1 。修改 requirements.txt ，如下所示：
Flask==0.10.1
Werkzeug==0.10.4