我正试图在heroku上部署我的第一个django应用程序，并一直在heroku网站上遵循指南。我一直在检查这个步骤，看看网络进程是否启动，看起来像是应用程序崩溃了：
(venv)Jonathans-MacBook-Air-2:myportfolio jonathanschen$ heroku ps
=== web: `python ./manage.py runserver 0.0.0.0:$PORT --noreload`
web.1: crashed for 2m
当我查看日志时，里面有很多东西。我读过一些关于stackoverflow的不同帖子，想知道我是否需要在根目录中有一个proc文件（似乎有相互矛盾的答案）？这可能是造成车祸的原因吗？一如既往地感谢大量提前堆栈溢出。这是日志：
(venv)Jonathans-MacBook-Air-2:myportfolio jonathanschen$ heroku logs
2012-08-01T18:29:55+00:00 app[web.1]: self.fetch_command(subcommand).run_from_argv(self.argv)
2012-08-01T18:29:55+00:00 app[web.1]: File "/app/.heroku/venv/lib/python2.7/site-packages/django/core/management/base.py", line 196, in run_from_argv
2012-08-01T18:29:55+00:00 app[web.1]: self.execute(*args, **options.__dict__)
2012-08-01T18:29:55+00:00 app[web.1]: File "/app/.heroku/venv/lib/python2.7/site-packages/django/core/management/base.py", line 232, in execute
2012-08-01T18:29:55+00:00 app[web.1]: output = self.handle(*args, **options)
2012-08-01T18:29:55+00:00 app[web.1]: File "/app/.heroku/venv/lib/python2.7/site-packages/django/core/management/commands/runserver.py", line 69, in handle
2012-08-01T18:29:55+00:00 app[web.1]: self.run(*args, **options)
2012-08-01T18:29:55+00:00 app[web.1]: File "/app/.heroku/venv/lib/python2.7/site-packages/django/core/management/commands/runserver.py", line 80, in run
2012-08-01T18:29:55+00:00 app[web.1]: self.inner_run(*args, **options)
2012-08-01T18:29:55+00:00 app[web.1]: File "/app/.heroku/venv/lib/python2.7/site-packages/django/core/management/commands/runserver.py", line 91, in inner_run
2012-08-01T18:29:55+00:00 app[web.1]: self.validate(display_num_errors=True)
2012-08-01T18:29:55+00:00 app[web.1]: File "/app/.heroku/venv/lib/python2.7/site-packages/django/core/management/base.py", line 266, in validate
2012-08-01T18:29:55+00:00 app[web.1]: num_errors = get_validation_errors(s, app)
2012-08-01T18:29:55+00:00 app[web.1]: File "/app/.heroku/venv/lib/python2.7/site-packages/django/core/management/validation.py", line 23, in get_validation_errors
2012-08-01T18:29:55+00:00 app[web.1]: from django.db import models, connection
2012-08-01T18:29:55+00:00 app[web.1]: File "/app/.heroku/venv/lib/python2.7/site-packages/django/db/__init__.py", line 40, in <module>
2012-08-01T18:29:55+00:00 app[web.1]: backend = load_backend(connection.settings_dict['ENGINE'])
2012-08-01T18:29:55+00:00 app[web.1]: File "/app/.heroku/venv/lib/python2.7/site-packages/django/db/__init__.py", line 34, in __getattr__
2012-08-01T18:29:55+00:00 app[web.1]: return getattr(connections[DEFAULT_DB_ALIAS], item)
2012-08-01T18:29:55+00:00 app[web.1]: File "/app/.heroku/venv/lib/python2.7/site-packages/django/db/utils.py", line 92, in __getitem__
2012-08-01T18:29:55+00:00 app[web.1]: backend = load_backend(db['ENGINE'])
2012-08-01T18:29:55+00:00 app[web.1]: File "/app/.heroku/venv/lib/python2.7/site-packages/django/db/utils.py", line 24, in load_backend
2012-08-01T18:29:55+00:00 app[web.1]: return import_module('.base', backend_name)
2012-08-01T18:29:55+00:00 app[web.1]: File "/app/.heroku/venv/lib/python2.7/site-packages/django/utils/importlib.py", line 34, in import_module
2012-08-01T18:29:55+00:00 app[web.1]: name = _resolve_name(name[level:], package, level)
2012-08-01T18:29:55+00:00 app[web.1]: File "/app/.heroku/venv/lib/python2.7/site-packages/django/utils/importlib.py", line 7, in _resolve_name
2012-08-01T18:29:55+00:00 app[web.1]: raise ValueError("'package' not set to a string")
2012-08-01T18:29:55+00:00 app[web.1]: ValueError: 'package' not set to a string
2012-08-01T18:29:56+00:00 heroku[web.1]: Process exited with status 1
2012-08-01T18:29:56+00:00 heroku[web.1]: State changed from starting to crashed
2012-08-01T18:41:41+00:00 heroku[web.1]: State changed from crashed to starting
2012-08-01T18:41:45+00:00 heroku[web.1]: Starting process with command `python ./manage.py runserver 0.0.0.0:22549 --noreload`
2012-08-01T18:41:46+00:00 app[web.1]: Validating models...
2012-08-01T18:41:46+00:00 app[web.1]:
2012-08-01T18:41:46+00:00 app[web.1]: Traceback (most recent call last):
2012-08-01T18:41:46+00:00 app[web.1]: File "./manage.py", line 10, in <module>
2012-08-01T18:41:46+00:00 app[web.1]: execute_from_command_line(sys.argv)
2012-08-01T18:41:46+00:00 app[web.1]: File "/app/.heroku/venv/lib/python2.7/site-packages/django/core/management/__init__.py", line 443, in execute_from_command_line
2012-08-01T18:41:46+00:00 app[web.1]: File "/app/.heroku/venv/lib/python2.7/site-packages/django/core/management/__init__.py", line 382, in execute
2012-08-01T18:41:46+00:00 app[web.1]: self.fetch_command(subcommand).run_from_argv(self.argv)
2012-08-01T18:41:46+00:00 app[web.1]: utility.execute()
2012-08-01T18:41:46+00:00 app[web.1]: File "/app/.heroku/venv/lib/python2.7/site-packages/django/core/management/base.py", line 196, in run_from_argv
2012-08-01T18:41:46+00:00 app[web.1]: self.execute(*args, **options.__dict__)
2012-08-01T18:41:46+00:00 app[web.1]: File "/app/.heroku/venv/lib/python2.7/site-packages/django/core/management/base.py", line 232, in execute
2012-08-01T18:41:46+00:00 app[web.1]: File "/app/.heroku/venv/lib/python2.7/site-packages/django/core/management/commands/runserver.py", line 80, in run
2012-08-01T18:41:46+00:00 app[web.1]: File "/app/.heroku/venv/lib/python2.7/site-packages/django/core/management/commands/runserver.py", line 69, in handle
2012-08-01T18:41:46+00:00 app[web.1]: output = self.handle(*args, **options)
2012-08-01T18:41:46+00:00 app[web.1]: self.run(*args, **options)
2012-08-01T18:41:46+00:00 app[web.1]: self.validate(display_num_errors=True)
2012-08-01T18:41:46+00:00 app[web.1]: File "/app/.heroku/venv/lib/python2.7/site-packages/django/core/management/commands/runserver.py", line 91, in inner_run
2012-08-01T18:41:46+00:00 app[web.1]: self.inner_run(*args, **options)
2012-08-01T18:41:46+00:00 app[web.1]: File "/app/.heroku/venv/lib/python2.7/site-packages/django/core/management/validation.py", line 23, in get_validation_errors
2012-08-01T18:41:46+00:00 app[web.1]: File "/app/.heroku/venv/lib/python2.7/site-packages/django/db/__init__.py", line 34, in __getattr__
2012-08-01T18:41:46+00:00 app[web.1]: File "/app/.heroku/venv/lib/python2.7/site-packages/django/db/__init__.py", line 40, in <module>
2012-08-01T18:41:46+00:00 app[web.1]: num_errors = get_validation_errors(s, app)
2012-08-01T18:41:46+00:00 app[web.1]: backend = load_backend(connection.settings_dict['ENGINE'])
2012-08-01T18:41:46+00:00 app[web.1]: from django.db import models, connection
2012-08-01T18:41:46+00:00 app[web.1]: File "/app/.heroku/venv/lib/python2.7/site-packages/django/core/management/base.py", line 266, in validate
2012-08-01T18:41:46+00:00 app[web.1]: return getattr(connections[DEFAULT_DB_ALIAS], item)
2012-08-01T18:41:46+00:00 app[web.1]: File "/app/.heroku/venv/lib/python2.7/site-packages/django/db/utils.py", line 92, in __getitem__
2012-08-01T18:41:46+00:00 app[web.1]: backend = load_backend(db['ENGINE'])
2012-08-01T18:41:46+00:00 app[web.1]: File "/app/.heroku/venv/lib/python2.7/site-packages/django/db/utils.py", line 24, in load_backend
2012-08-01T18:41:46+00:00 app[web.1]: return import_module('.base', backend_name)
2012-08-01T18:41:46+00:00 app[web.1]: File "/app/.heroku/venv/lib/python2.7/site-packages/django/utils/importlib.py", line 34, in import_module
2012-08-01T18:41:46+00:00 app[web.1]: name = _resolve_name(name[level:], package, level)
2012-08-01T18:41:46+00:00 app[web.1]: File "/app/.heroku/venv/lib/python2.7/site-packages/django/utils/importlib.py", line 7, in _resolve_name
2012-08-01T18:41:46+00:00 app[web.1]: raise ValueError("'package' not set to a string")
2012-08-01T18:41:46+00:00 app[web.1]: ValueError: 'package' not set to a string
2012-08-01T18:41:47+00:00 heroku[web.1]: Process exited with status 1
2012-08-01T18:41:47+00:00 heroku[web.1]: State changed from starting to crashed
2012-08-01T18:46:00+00:00 heroku[slugc]: Slug compilation started
2012-08-01T18:48:55+00:00 heroku[api]: Release v5 created by jonathanschen@gmail.com
2012-08-01T18:48:55+00:00 heroku[api]: Deploy f097e62 by jonathanschen@gmail.com
2012-08-01T18:48:55+00:00 heroku[web.1]: State changed from crashed to starting
2012-08-01T18:48:56+00:00 heroku[slugc]: Slug compilation finished
2012-08-01T18:48:58+00:00 heroku[web.1]: Starting process with command `python ./manage.py runserver 0.0.0.0:23141 --noreload`
2012-08-01T18:48:59+00:00 app[web.1]: Traceback (most recent call last):
2012-08-01T18:48:59+00:00 app[web.1]: File "./manage.py", line 10, in <module>
2012-08-01T18:48:59+00:00 app[web.1]: execute_from_command_line(sys.argv)
2012-08-01T18:48:59+00:00 app[web.1]: File "/app/.heroku/venv/lib/python2.7/site-packages/django/core/management/__init__.py", line 443, in execute_from_command_line
2012-08-01T18:48:59+00:00 app[web.1]: utility.execute()
2012-08-01T18:48:59+00:00 app[web.1]: File "/app/.heroku/venv/lib/python2.7/site-packages/django/core/management/__init__.py", line 382, in execute
2012-08-01T18:48:59+00:00 app[web.1]: File "/app/.heroku/venv/lib/python2.7/site-packages/django/core/management/__init__.py", line 252, in fetch_command
2012-08-01T18:48:59+00:00 app[web.1]: self.fetch_command(subcommand).run_from_argv(self.argv)
2012-08-01T18:48:59+00:00 app[web.1]: File "/app/.heroku/venv/lib/python2.7/site-packages/django/conf/__init__.py", line 42, in _setup
2012-08-01T18:48:59+00:00 app[web.1]: File "/app/.heroku/venv/lib/python2.7/site-packages/django/core/management/__init__.py", line 101, in get_commands
2012-08-01T18:48:59+00:00 app[web.1]: app_name = get_commands()[subcommand]
2012-08-01T18:48:59+00:00 app[web.1]: apps = settings.INSTALLED_APPS
2012-08-01T18:48:59+00:00 app[web.1]: File "/app/.heroku/venv/lib/python2.7/site-packages/django/utils/functional.py", line 184, in inner
2012-08-01T18:48:59+00:00 app[web.1]: mod = importlib.import_module(self.SETTINGS_MODULE)
2012-08-01T18:48:59+00:00 app[web.1]: self._wrapped = Settings(settings_module)
2012-08-01T18:48:59+00:00 app[web.1]: File "/app/.heroku/venv/lib/python2.7/site-packages/django/utils/importlib.py", line 35, in import_module
2012-08-01T18:48:59+00:00 app[web.1]: self._setup()
2012-08-01T18:48:59+00:00 app[web.1]: ^
2012-08-01T18:48:59+00:00 app[web.1]: File "/app/.heroku/venv/lib/python2.7/site-packages/django/conf/__init__.py", line 93, in __init__
2012-08-01T18:48:59+00:00 app[web.1]: File "/app/myportfolio/settings.py", line 23
2012-08-01T18:48:59+00:00 app[web.1]: SyntaxError: invalid syntax
2012-08-01T18:48:59+00:00 app[web.1]: __import__(name)
2012-08-01T18:48:59+00:00 app[web.1]: }
2012-08-01T18:49:00+00:00 heroku[web.1]: Process exited with status 1
2012-08-01T18:49:00+00:00 heroku[web.1]: State changed from starting to crashed
(venv)Jonathans-MacBook-Air-2:myportfolio jonathanschen$ heroku ps
=== web: `python ./manage.py runserver 0.0.0.0:$PORT --noreload`
web.1: crashed for 1m
(venv)Jonathans-MacBook-Air-2:myportfolio jonathanschen$ heroku ps
=== web: `python ./manage.py runserver 0.0.0.0:$PORT --noreload`
web.1: crashed for 2m
(venv)Jonathans-MacBook-Air-2:myportfolio jonathanschen$ heroku logs
2012-08-01T18:29:55+00:00 app[web.1]: ValueError: 'package' not set to a string
2012-08-01T18:29:56+00:00 heroku[web.1]: Process exited with status 1
2012-08-01T18:29:56+00:00 heroku[web.1]: State changed from starting to crashed
2012-08-01T18:41:41+00:00 heroku[web.1]: State changed from crashed to starting
2012-08-01T18:41:45+00:00 heroku[web.1]: Starting process with command `python ./manage.py runserver 0.0.0.0:22549 --noreload`
2012-08-01T18:41:46+00:00 app[web.1]: Validating models...
2012-08-01T18:41:46+00:00 app[web.1]:
2012-08-01T18:41:46+00:00 app[web.1]: Traceback (most recent call last):
2012-08-01T18:41:46+00:00 app[web.1]: File "./manage.py", line 10, in <module>
2012-08-01T18:41:46+00:00 app[web.1]: execute_from_command_line(sys.argv)
2012-08-01T18:41:46+00:00 app[web.1]: File "/app/.heroku/venv/lib/python2.7/site-packages/django/core/management/__init__.py", line 443, in execute_from_command_line
2012-08-01T18:41:46+00:00 app[web.1]: File "/app/.heroku/venv/lib/python2.7/site-packages/django/core/management/__init__.py", line 382, in execute
2012-08-01T18:41:46+00:00 app[web.1]: self.fetch_command(subcommand).run_from_argv(self.argv)
2012-08-01T18:41:46+00:00 app[web.1]: utility.execute()
2012-08-01T18:41:46+00:00 app[web.1]: File "/app/.heroku/venv/lib/python2.7/site-packages/django/core/management/base.py", line 196, in run_from_argv
2012-08-01T18:41:46+00:00 app[web.1]: self.execute(*args, **options.__dict__)
2012-08-01T18:41:46+00:00 app[web.1]: File "/app/.heroku/venv/lib/python2.7/site-packages/django/core/management/base.py", line 232, in execute
2012-08-01T18:41:46+00:00 app[web.1]: File "/app/.heroku/venv/lib/python2.7/site-packages/django/core/management/commands/runserver.py", line 80, in run
2012-08-01T18:41:46+00:00 app[web.1]: File "/app/.heroku/venv/lib/python2.7/site-packages/django/core/management/commands/runserver.py", line 69, in handle
2012-08-01T18:41:46+00:00 app[web.1]: output = self.handle(*args, **options)
2012-08-01T18:41:46+00:00 app[web.1]: self.run(*args, **options)
2012-08-01T18:41:46+00:00 app[web.1]: self.validate(display_num_errors=True)
2012-08-01T18:41:46+00:00 app[web.1]: File "/app/.heroku/venv/lib/python2.7/site-packages/django/core/management/commands/runserver.py", line 91, in inner_run
2012-08-01T18:41:46+00:00 app[web.1]: self.inner_run(*args, **options)
2012-08-01T18:41:46+00:00 app[web.1]: File "/app/.heroku/venv/lib/python2.7/site-packages/django/core/management/validation.py", line 23, in get_validation_errors
2012-08-01T18:41:46+00:00 app[web.1]: File "/app/.heroku/venv/lib/python2.7/site-packages/django/db/__init__.py", line 34, in __getattr__
2012-08-01T18:41:46+00:00 app[web.1]: File "/app/.heroku/venv/lib/python2.7/site-packages/django/db/__init__.py", line 40, in <module>
2012-08-01T18:41:46+00:00 app[web.1]: num_errors = get_validation_errors(s, app)
2012-08-01T18:41:46+00:00 app[web.1]: backend = load_backend(connection.settings_dict['ENGINE'])
2012-08-01T18:41:46+00:00 app[web.1]: from django.db import models, connection
2012-08-01T18:41:46+00:00 app[web.1]: File "/app/.heroku/venv/lib/python2.7/site-packages/django/core/management/base.py", line 266, in validate
2012-08-01T18:41:46+00:00 app[web.1]: return getattr(connections[DEFAULT_DB_ALIAS], item)
2012-08-01T18:41:46+00:00 app[web.1]: File "/app/.heroku/venv/lib/python2.7/site-packages/django/db/utils.py", line 92, in __getitem__
2012-08-01T18:41:46+00:00 app[web.1]: backend = load_backend(db['ENGINE'])
2012-08-01T18:41:46+00:00 app[web.1]: File "/app/.heroku/venv/lib/python2.7/site-packages/django/db/utils.py", line 24, in load_backend
2012-08-01T18:41:46+00:00 app[web.1]: return import_module('.base', backend_name)
2012-08-01T18:41:46+00:00 app[web.1]: File "/app/.heroku/venv/lib/python2.7/site-packages/django/utils/importlib.py", line 34, in import_module
2012-08-01T18:41:46+00:00 app[web.1]: name = _resolve_name(name[level:], package, level)
2012-08-01T18:41:46+00:00 app[web.1]: File "/app/.heroku/venv/lib/python2.7/site-packages/django/utils/importlib.py", line 7, in _resolve_name
2012-08-01T18:41:46+00:00 app[web.1]: raise ValueError("'package' not set to a string")
2012-08-01T18:41:46+00:00 app[web.1]: ValueError: 'package' not set to a string
2012-08-01T18:41:47+00:00 heroku[web.1]: Process exited with status 1
2012-08-01T18:41:47+00:00 heroku[web.1]: State changed from starting to crashed
2012-08-01T18:46:00+00:00 heroku[slugc]: Slug compilation started
2012-08-01T18:48:55+00:00 heroku[api]: Release v5 created by jonathanschen@gmail.com
2012-08-01T18:48:55+00:00 heroku[api]: Deploy f097e62 by jonathanschen@gmail.com
2012-08-01T18:48:55+00:00 heroku[web.1]: State changed from crashed to starting
2012-08-01T18:48:56+00:00 heroku[slugc]: Slug compilation finished
2012-08-01T18:48:58+00:00 heroku[web.1]: Starting process with command `python ./manage.py runserver 0.0.0.0:23141 --noreload`
2012-08-01T18:48:59+00:00 app[web.1]: Traceback (most recent call last):
2012-08-01T18:48:59+00:00 app[web.1]: File "./manage.py", line 10, in <module>
2012-08-01T18:48:59+00:00 app[web.1]: execute_from_command_line(sys.argv)
2012-08-01T18:48:59+00:00 app[web.1]: File "/app/.heroku/venv/lib/python2.7/site-packages/django/core/management/__init__.py", line 443, in execute_from_command_line
2012-08-01T18:48:59+00:00 app[web.1]: utility.execute()
2012-08-01T18:48:59+00:00 app[web.1]: File "/app/.heroku/venv/lib/python2.7/site-packages/django/core/management/__init__.py", line 382, in execute
2012-08-01T18:48:59+00:00 app[web.1]: File "/app/.heroku/venv/lib/python2.7/site-packages/django/core/management/__init__.py", line 252, in fetch_command
2012-08-01T18:48:59+00:00 app[web.1]: self.fetch_command(subcommand).run_from_argv(self.argv)
2012-08-01T18:48:59+00:00 app[web.1]: File "/app/.heroku/venv/lib/python2.7/site-packages/django/conf/__init__.py", line 42, in _setup
2012-08-01T18:48:59+00:00 app[web.1]: File "/app/.heroku/venv/lib/python2.7/site-packages/django/core/management/__init__.py", line 101, in get_commands
2012-08-01T18:48:59+00:00 app[web.1]: app_name = get_commands()[subcommand]
2012-08-01T18:48:59+00:00 app[web.1]: apps = settings.INSTALLED_APPS
2012-08-01T18:48:59+00:00 app[web.1]: File "/app/.heroku/venv/lib/python2.7/site-packages/django/utils/functional.py", line 184, in inner
2012-08-01T18:48:59+00:00 app[web.1]: mod = importlib.import_module(self.SETTINGS_MODULE)
2012-08-01T18:48:59+00:00 app[web.1]: self._wrapped = Settings(settings_module)
2012-08-01T18:48:59+00:00 app[web.1]: File "/app/.heroku/venv/lib/python2.7/site-packages/django/utils/importlib.py", line 35, in import_module
2012-08-01T18:48:59+00:00 app[web.1]: self._setup()
2012-08-01T18:48:59+00:00 app[web.1]: ^
2012-08-01T18:48:59+00:00 app[web.1]: File "/app/.heroku/venv/lib/python2.7/site-packages/django/conf/__init__.py", line 93, in __init__
2012-08-01T18:48:59+00:00 app[web.1]: File "/app/myportfolio/settings.py", line 23
2012-08-01T18:48:59+00:00 app[web.1]: SyntaxError: invalid syntax
2012-08-01T18:48:59+00:00 app[web.1]: __import__(name)
2012-08-01T18:48:59+00:00 app[web.1]: }
2012-08-01T18:49:00+00:00 heroku[web.1]: Process exited with status 1
2012-08-01T18:49:00+00:00 heroku[web.1]: State changed from starting to crashed
2012-08-01T19:03:18+00:00 heroku[web.1]: State changed from crashed to starting
2012-08-01T19:03:21+00:00 heroku[web.1]: Starting process with command `python ./manage.py runserver 0.0.0.0:20934 --noreload`
2012-08-01T19:03:22+00:00 app[web.1]: Traceback (most recent call last):
2012-08-01T19:03:22+00:00 app[web.1]: File "./manage.py", line 10, in <module>
2012-08-01T19:03:22+00:00 app[web.1]: File "/app/.heroku/venv/lib/python2.7/site-packages/django/core/management/__init__.py", line 443, in execute_from_command_line
2012-08-01T19:03:22+00:00 app[web.1]: File "/app/.heroku/venv/lib/python2.7/site-packages/django/core/management/__init__.py", line 382, in execute
2012-08-01T19:03:22+00:00 app[web.1]: execute_from_command_line(sys.argv)
2012-08-01T19:03:22+00:00 app[web.1]: utility.execute()
2012-08-01T19:03:22+00:00 app[web.1]: self.fetch_command(subcommand).run_from_argv(self.argv)
2012-08-01T19:03:22+00:00 app[web.1]: File "/app/.heroku/venv/lib/python2.7/site-packages/django/core/management/__init__.py", line 252, in fetch_command
2012-08-01T19:03:22+00:00 app[web.1]: app_name = get_commands()[subcommand]
2012-08-01T19:03:22+00:00 app[web.1]: File "/app/.heroku/venv/lib/python2.7/site-packages/django/core/management/__init__.py", line 101, in get_commands
2012-08-01T19:03:22+00:00 app[web.1]: apps = settings.INSTALLED_APPS
2012-08-01T19:03:22+00:00 app[web.1]: self._setup()
2012-08-01T19:03:22+00:00 app[web.1]: File "/app/.heroku/venv/lib/python2.7/site-packages/django/utils/functional.py", line 184, in inner
2012-08-01T19:03:22+00:00 app[web.1]: File "/app/.heroku/venv/lib/python2.7/site-packages/django/conf/__init__.py", line 42, in _setup
2012-08-01T19:03:22+00:00 app[web.1]: self._wrapped = Settings(settings_module)
2012-08-01T19:03:22+00:00 app[web.1]: File "/app/.heroku/venv/lib/python2.7/site-packages/django/conf/__init__.py", line 93, in __init__
2012-08-01T19:03:22+00:00 app[web.1]: mod = importlib.import_module(self.SETTINGS_MODULE)
2012-08-01T19:03:22+00:00 app[web.1]: File "/app/.heroku/venv/lib/python2.7/site-packages/django/utils/importlib.py", line 35, in import_module
2012-08-01T19:03:22+00:00 app[web.1]: File "/app/myportfolio/settings.py", line 23
2012-08-01T19:03:22+00:00 app[web.1]: ^
2012-08-01T19:03:22+00:00 app[web.1]: SyntaxError: invalid syntax
2012-08-01T19:03:22+00:00 app[web.1]: __import__(name)
2012-08-01T19:03:22+00:00 app[web.1]: }
2012-08-01T19:03:23+00:00 heroku[web.1]: Process exited with status 1
2012-08-01T19:03:24+00:00 heroku[web.1]: State changed from starting to crashed
也有同样的问题，当查看日志（heroku日志）时，发现找不到模块psycopg2。
将psycopg2==2.4.5添加到requirements.txt文件中解决了问题
我遇到了这个问题，问题是settings.py文件中的语法错误。
我刚刚遇到了同样的问题，在经历了很多问题后才发现。
我注意到运行pip-freeze>requirements.txt会从文件中遗漏一些必需的项目。
值得注意的是这两个：
whiteoise==1.0.6wsgiref==0.1.2
你可以通过这里找到绝对需要的东西：
Heroku Django模板--requirements.txt