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" Running tail -f ../logs/error_log i get no errors. How can i find out what is the culprit here?
Stestagg
stestagg at gmail.com
Thu Jul 8 12:15:56 EDT 2021
[my reply on the list this time :)]
That's fine. Sorry, I should have provided more information.
This type of error that you're gettting /can/ happen if you have the
library correctly installed, but within your project, you have a different
file of the same name as the library.
Then when python tries to import 'flask', it actually imports your local
file, NOT the installed flask.
You see the error message is *not* saying that python can't find flask, but
that it can't find a name `run` within the flask module:
from flask import run, route, request, redirect
ImportError: cannot import name 'run'
Therefore python has successfully found a module named flask somewhere,
just that it's probably not the module you were expecting it to find.
This is almost always because of the file name issue I mentioned above, OR
because the wrong version of flask has been installed, or something similar.
One thing to try would be at the *very* top of counters.py, add the
following lines:
import flask
print(flask)
then run your command again, and see what the stdout output is. You should
see something like:
<module 'flask' from 'XXXXXXXXX'>
Does XXXXXX look like the right place for the flask installation? if not,
then that's the problem.
Steve
On Thu, Jul 8, 2021 at 5:08 PM Νίκος Βέργος <vergos.nikolas at gmail.com>
wrote:
> No, the way i have installed flask was under root account with the command
> pip3 install flask.
> But even if i installed flask under my nikos user account its evene worse
> as the file flask is not entered into PATH.
>
> So i guess as root i have to install flask, but then why cant it import
> 'run" ?
>
> [root at superhost ~]# whereis flask
> flask: /usr/local/bin/flask
>
> Στις Πέμ, 8 Ιουλ 2021 στις 7:02 μ.μ., ο/η Stestagg <stestagg at gmail.com>
> έγραψε:
>
>> Hi
>>
>> Do you have a file or folder named 'flask' in the same directory as
>> www.py by any chance?
>>
>> Steve
>>
>> On Thu, Jul 8, 2021 at 4:50 PM vergos.... at gmail.com <
>> vergos.nikolas at gmail.com> wrote:
>>
>>> 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"
>>>
>>> Running tail -f ../logs/error_log i get no errors.
>>>
>>> How can i find out what is the culprit here?
>>>
>>> [nikos at superhost wsgi]$ export FLASK_APP=www.py
>>> [nikos at superhost wsgi]$ export FLASK_ENV=development
>>> [nikos at 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'
>>>
>>> and this is the error_log when tries to be displayed via browser:
>>>
>>> [Thu Jul 08 15:08:36.436195 2021] [wsgi:error] [pid 575443:tid
>>> 139757752112896] [remote 89.210.199.119:6718] mod_wsgi (pid=575443):
>>> Failed to exec Python script file '/home/nikos/wsgi/www.py'.
>>>
>>> [Thu Jul 08 15:08:36.436276 2021] [wsgi:error] [pid 575443:tid
>>> 139757752112896] [remote 89.210.199.119:6718] mod_wsgi (pid=575443):
>>> Exception occurred processing WSGI script '/home/nikos/wsgi/www.py'.
>>>
>>> [Thu Jul 08 15:08:36.436408 2021] [wsgi:error] [pid 575443:tid
>>> 139757752112896] [remote 89.210.199.119:6718] Traceback (most recent
>>> call last):
>>>
>>> [Thu Jul 08 15:08:36.436432 2021] [wsgi:error] [pid 575443:tid
>>> 139757752112896] [remote 89.210.199.119:6718] File
>>> "/home/nikos/wsgi/www.py", line 4, in <module>
>>>
>>> [Thu Jul 08 15:08:36.436436 2021] [wsgi:error] [pid 575443:tid
>>> 139757752112896] [remote 89.210.199.119:6718] import counters
>>>
>>> [Thu Jul 08 15:08:36.436441 2021] [wsgi:error] [pid 575443:tid
>>> 139757752112896] [remote 89.210.199.119:6718] File
>>> "/home/nikos/wsgi/counters.py", line 6, in <module>
>>>
>>> [Thu Jul 08 15:08:36.436444 2021] [wsgi:error] [pid 575443:tid
>>> 139757752112896] [remote 89.210.199.119:6718] from flask import run,
>>> route, request, redirect
>>>
>>> [Thu Jul 08 15:08:36.436458 2021] [wsgi:error] [pid 575443:tid
>>> 139757752112896] [remote 89.210.199.119:6718] ImportError: cannot
>>> import name 'run'
>>>
>>> [Thu Jul 08 15:08:40.075655 2021] [wsgi:error] [pid 575443:tid
>>> 139757777291008] [remote 89.210.199.119:13389] mod_wsgi (pid=575443):
>>> Failed to exec Python script file '/home/nikos/wsgi/www.py'.
>>>
>>> [Thu Jul 08 15:08:40.075703 2021] [wsgi:error] [pid 575443:tid
>>> 139757777291008] [remote 89.210.199.119:13389] mod_wsgi (pid=575443):
>>> Exception occurred processing WSGI script '/home/nikos/wsgi/www.py'.
>>>
>>> [Thu Jul 08 15:08:40.075785 2021] [wsgi:error] [pid 575443:tid
>>> 139757777291008] [remote 89.210.199.119:13389] Traceback (most recent
>>> call last):
>>>
>>> [Thu Jul 08 15:08:40.075802 2021] [wsgi:error] [pid 575443:tid
>>> 139757777291008] [remote 89.210.199.119:13389] File
>>> "/home/nikos/wsgi/www.py", line 4, in <module>
>>>
>>> [Thu Jul 08 15:08:40.075805 2021] [wsgi:error] [pid 575443:tid
>>> 139757777291008] [remote 89.210.199.119:13389] import counters
>>>
>>> [Thu Jul 08 15:08:40.075810 2021] [wsgi:error] [pid 575443:tid
>>> 139757777291008] [remote 89.210.199.119:13389] File
>>> "/home/nikos/wsgi/counters.py", line 6, in <module>
>>>
>>> [Thu Jul 08 15:08:40.075813 2021] [wsgi:error] [pid 575443:tid
>>> 139757777291008] [remote 89.210.199.119:13389] from flask import run,
>>> route, request, redirect
>>>
>>> [Thu Jul 08 15:08:40.075825 2021] [wsgi:error] [pid 575443:tid
>>> 139757777291008] [remote 89.210.199.119:13389] ImportError: cannot
>>> import name 'run'
>>> --
>>> https://mail.python.org/mailman/listinfo/python-list
>>>
>>
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