【发布时间】：2018-08-28 17:26:23
【问题描述】：
我正在尝试使用 python 中的 flask-ask 和 ngrok 开始为 alexa 开发一项技能。以下是我的代码：
from flask import Flask
from flask_ask import Ask, statement, question, session
import json
import requests
import time
import unidecode
app = Flask(__name__)
ask = Ask(app, "/reddit_reader")
def get_headlines():
titles = 'is this working'
return titles
@app.route('/')
def homepage():
return "hi there, how ya doin?"
@ask.launch
def start_skill():
welcome_message = 'Hello there, would you like the news?'
return question(welcome_message)
@ask.intent("YesIntent")
def share_headlines():
headlines = get_headlines()
headline_msg = 'The current world news headlines are
{}'.format(headlines)
return statement(headline_msg)
@ask.intent("NoIntent")
def no_intent():
bye_text = 'I am not sure why you asked me to run then, but okay... bye'
return statement(bye_text)
if __name__ == '__main__':
app.run(debug=True)
代码在我的机器上运行良好，如果我打印出来，它会返回正确的输出。但是，当我使用 ngrok 在亚马逊上部署该技能时，会出现 HTTP 500 内部错误。我在文本和开发控制台中的 json 模拟器中都收到相同的 500 内部错误。
这是我的意图架构：
{
"intents": [
{
"intent": "YesIntent"
},
{
"intent": "NoIntent"
}
]
}
我在 python 提示符中收到以下错误：
AttributeError: module 'lib' has no attribute 'X509V3_EXT_get
stacktrace如下：
Traceback (most recent call last):
File "C:\Python36\lib\site-packages\flask\app.py", line 1997, in __call__
return self.wsgi_app(environ, start_response)
File "C:\Python36\lib\site-packages\flask\app.py", line 1985, in wsgi_app
response = self.handle_exception(e)
File "C:\Python36\lib\site-packages\flask\app.py", line 1540, in handle_exception
reraise(exc_type, exc_value, tb)
File "C:\Python36\lib\site-packages\flask\_compat.py", line 33, in reraise
raise value
File "C:\Python36\lib\site-packages\flask\app.py", line 1982, in wsgi_app
response = self.full_dispatch_request()
File "C:\Python36\lib\site-packages\flask\app.py", line 1614, in full_dispatch_request
rv = self.handle_user_exception(e)
File "C:\Python36\lib\site-packages\flask\app.py", line 1517, in handle_user_exception
reraise(exc_type, exc_value, tb)
File "C:\Python36\lib\site-packages\flask\_compat.py", line 33, in reraise
raise value
File "C:\Python36\lib\site-packages\flask\app.py", line 1612, in full_dispatch_request
rv = self.dispatch_request()
File "C:\Python36\lib\site-packages\flask\app.py", line 1598, in dispatch_request
return self.view_functions[rule.endpoint](**req.view_args)
File "C:\Python36\lib\site-packages\flask_ask\core.py", line 728, in _flask_view_func
ask_payload = self._alexa_request(verify=self.ask_verify_requests)
File "C:\Python36\lib\site-packages\flask_ask\core.py", line 662, in _alexa_request
cert = verifier.load_certificate(cert_url)
File "C:\Python36\lib\site-packages\flask_ask\verifier.py", line 21, in load_certificate
if not _valid_certificate(cert):
File "C:\Python36\lib\site-packages\flask_ask\verifier.py", line 63, in _valid_certificate
value = str(extension)
File "C:\Python36\lib\site-packages\OpenSSL\crypto.py", line 779, in __str__
return self._subjectAltNameString()
File "C:\Python36\lib\site-packages\OpenSSL\crypto.py", line 740, in _subjectAltNameString
method = _lib.X509V3_EXT_get(self._extension)
AttributeError: module 'lib' has no attribute 'X509V3_EXT_get'
点冻结输出：
aniso8601==1.2.0
asn1crypto==0.24.0
certifi==2018.1.18
cffi==1.11.5
chardet==3.0.4
click==6.7
cryptography==2.2
Flask==0.12.1
Flask-Ask==0.9.8
idna==2.6
itsdangerous==0.24
Jinja2==2.10
MarkupSafe==1.0
pycparser==2.18
pyOpenSSL==17.0.0
python-dateutil==2.7.0
PyYAML==3.12
requests==2.18.4
six==1.11.0
Unidecode==1.0.22
urllib3==1.22
Werkzeug==0.14.1
我已经尝试在 python 2.7 和 python 3.6 上运行它。任何帮助表示赞赏
【问题讨论】：
-
堆栈跟踪是什么？
-
将其添加到问题中
-
你能做一个
pip freeze并粘贴那个输出吗？ -
也添加了 pip freeze 输出
-
尝试卸载并降级
cryptography到 1.7 版本，看看是否能解决这个问题，pyOpenSSL 至少需要 1.7，旧的 v17.0.0 pyOpenSSL 依赖的新加密模块中可能已删除某些内容开。
标签： python alexa alexa-skill ngrok