将简单的 Web 应用程序部署到 Elastic Beanstalk 时，没有名为“应用程序”的模块出错

Question

将简单的 Web 应用程序部署到 Elastic Beanstalk 时，没有名为“应用程序”的模块出错

Hun*_*wag 7 python amazon-web-services flask amazon-elastic-beanstalk

我正在使用本教程和他们拥有的相同“application.py”文件将 Web 应用程序部署到弹性 beantalk：https ://docs.aws.amazon.com/elasticbeanstalk/latest/dg/create-deploy-python-flask 。 html#python-flask-setup-venv

访问该站点时出现 502 错误，并且环境健康状况下降/严重。当我检查日志时，我看到了这一点（我认为这是问题的根源）：

Jun 19 22:05:18 ip-172-31-15-237 web: File "/usr/lib64/python3.7/importlib/__init__.py", line 127, in import_module
Jun 19 22:05:18 ip-172-31-15-237 web: return _bootstrap._gcd_import(name[level:], package, level)
Jun 19 22:05:18 ip-172-31-15-237 web: File "<frozen importlib._bootstrap>", line 1006, in _gcd_import
Jun 19 22:05:18 ip-172-31-15-237 web: File "<frozen importlib._bootstrap>", line 983, in _find_and_load
Jun 19 22:05:18 ip-172-31-15-237 web: File "<frozen importlib._bootstrap>", line 965, in _find_and_load_unlocked
Jun 19 22:05:18 ip-172-31-15-237 web: ModuleNotFoundError: No module named 'application'

Run Code Online (Sandbox Code Playgroud)

这是我的 application.py 文件：


from flask import Flask

# print a nice greeting.
def say_hello(username = "World"):
    return '<p>Hello %s!</p>\n' % username

# some bits of text for the page.
header_text = '''
    <html>\n<head> <title>EB Flask Test</title> </head>\n<body>'''
instructions = '''
    <p><em>Hint</em>: This is a RESTful web service! Append a username
    to the URL (for example: <code>/Thelonious</code>) to say hello to
    someone specific.</p>\n'''
home_link = '<p><a href="/">Back</a></p>\n'
footer_text = '</body>\n</html>'

# EB looks for an 'application' callable by default.
application = Flask(__name__)

# add a rule for the index page.
application.add_url_rule('/', 'index', (lambda: header_text +
    say_hello() + instructions + footer_text))

# add a rule when the page is accessed with a name appended to the site
# URL.
application.add_url_rule('/<username>', 'hello', (lambda username:
    header_text + say_hello(username) + home_link + footer_text))

# run the app.
if __name__ == "__main__":
    # Setting debug to True enables debug output. This line should be
    # removed before deploying a production app.
    #application.debug = True
    application.run()

Run Code Online (Sandbox Code Playgroud)

这是我的 requirements.txt 文件：

click==7.1.2
Flask==1.1.2
itsdangerous==1.1.0
Jinja2==2.11.2
MarkupSafe==1.1.1
numpy==1.16.3
pandas==0.24.2
python-dateutil==2.8.1
pytz==2020.1
six==1.15.0
Werkzeug==1.0.1

Run Code Online (Sandbox Code Playgroud)

我上传到 elastic beanstalk 的压缩文件夹仅包含这两个文件。我在那里也有一个虚拟环境，但是教程说你不需要它，所以我摆脱了它。

另外我正在运行 Python 3.7.1，所以我有 pip3。我应该注意到，当我只运行 python 代码时，Web 应用程序就可以工作。