Op 08-07-2021 om 15:42 schreef vergos....@gmail.com:
i just moved from bottleframework to flask. I changes what needed to be altered to
convert the code and when i run it i just get "Internal server error"
This error is the error any web site shows when the code of your
application has an error.
How can i find out what is the culprit here?
[nikos@superhost wsgi]$ export FLASK_APP=www.py
[nikos@superhost wsgi]$ export FLASK_ENV=development
[nikos@superhost wsgi]$ flask run
* Serving Flask app 'www.py' (lazy loading)
* Environment: development
* Debug mode: on
Usage: flask run [OPTIONS]
Try 'flask run --help' for help.
Error: While importing 'www', an ImportError was raised:
Traceback (most recent call last):
File "/usr/local/lib/python3.6/site-packages/flask/cli.py", line 256, in
locate_app
__import__(module_name)
File "/home/nikos/wsgi/www.py", line 4, in <module>
import counters
File "/home/nikos/wsgi/counters.py", line 6, in <module>
from flask import run, route, request, redirect
ImportError: cannot import name 'run'
When I import flask in the REPL (the Python command processor) and look
at what it exports:
>>> import flask
>>> dir(flask)
['Blueprint', 'Config', 'Flask', 'Markup', 'Request', 'Response',
'Session', '__builtins__', '__cached__', '__doc__', '__file__',
'__loader__', '__name__', '__package__', '__path__', '__spec__',
'__version__', '_app_ctx_stack', '_compat', '_request_ctx_stack',
'abort', 'after_this_request', 'app', 'appcontext_popped',
'appcontext_pushed', 'appcontext_tearing_down',
'before_render_template', 'blueprints', 'cli', 'config',
'copy_current_request_context', 'ctx', 'current_app', 'escape', 'flash',
'g', 'get_flashed_messages', 'get_template_attribute', 'globals',
'got_request_exception', 'has_app_context', 'has_request_context',
'helpers', 'json', 'json_available', 'jsonify', 'make_response',
'message_flashed', 'redirect', 'render_template',
'render_template_string', 'request', 'request_finished',
'request_started', 'request_tearing_down', 'safe_join', 'send_file',
'send_from_directory', 'session', 'sessions', 'signals',
'signals_available', 'stream_with_context', 'template_rendered',
'templating', 'url_for', 'wrappers']
... there is no "run" there. What were you trying to achieve?
If you are thinking about the "flask run" mentioned in startup, that is
a bash/cmd command, an easy way to start the server from the command line:
(venv):~/python/debtors> export FLASK_APP=debtors ; flask run
* Serving Flask app "debtors"
* Environment: production
WARNING: This is a development server. Do not use it in a production
deployment.
Use a production WSGI server instead.
* Debug mode: off
* Running on http://127.0.0.1:5000/ (Press CTRL+C to quit)
--
Met vriendelijke groet / Kind regards
Menno Hölscher
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