Develop Reference

python -m SimpleHTTPServer no longer working

python -m SimpleHTTPServer 8000 was working fine in order to render my web pages on localhost. When it quit, I used 7800, which also failed eventually, and now no numerical string works. For example, having launched the server using python -m SimpleHTTPServer 7600, I get the following when trying to render through the browser (any browser):
Serving HTTP on 0.0.0.0 port 7600 ...
127.0.0.1 - - [21/Feb/2022 20:14:04] code 404, message File not found
127.0.0.1 - - [21/Feb/2022 20:14:04] "GET /favicon.ico HTTP/1.1" 404 -
127.0.0.1 - - [21/Feb/2022 20:14:19] code 404, message File not found
127.0.0.1 - - [21/Feb/2022 20:14:19] "GET /FrontandBackMatter/css/style.css HTTP/1.1" 404 -
I get this result having changed nothing in the files.

Using Flask with Google App Engine Dev Server, swagger ui not found?

I am developing a website using Flask and Flask Restplus. I tried to use Google App Engine to deploy the app, however when I run dev_appserver.py on my computer, all the swagger-ui files cannot be found. I have no ideas why this happens? Can anyone tell me how to solve this?
Here is the example logs 404 for the resource:
INFO 2017-06-14 04:21:52,859 module.py:809] default: "GET /api/ HTTP/1.1" 200 3710
INFO 2017-06-14 04:21:53,113 module.py:809] default: "GET /swaggerui/bower/swagger-ui/dist/css/screen.css HTTP/1.1" 404 233
INFO 2017-06-14 04:21:53,113 module.py:809] default: "GET /swaggerui/bower/swagger-ui/dist/lib/jquery.slideto.min.js HTTP/1.1" 404 233
INFO 2017-06-14 04:21:53,115 module.py:809] default: "GET /swaggerui/bower/swagger-ui/dist/lib/object-assign-pollyfill.js HTTP/1.1" 404 233
INFO 2017-06-14 04:21:53,121 module.py:809] default: "GET /swaggerui/bower/swagger-ui/dist/css/typography.css HTTP/1.1" 404 233

You need to put swaggerui inside your project. I suggest making a libs directory at the root of your project (same level as app.yaml).
Then, use GAE's vendoring method. To use vendoring, create (or modify) appengine_config.py in the root of your project, as follows:
from google.appengine.ext import vendor
# Add 3rd party libraries in the "libs" folder.
vendor.add('libs')

Flask can't find/run my app even though its in my Pythonpath

I have a very simple Flask app setup locally but when I try to run it I get this error:
NoAppException: The file/path provided (cowork_map) does not appear to exist. Please verify the path is correct. If app is not on PYTHONPATH, ensure the extension is .py
Im in a virtual env with flask and all other requirements installed and up to date, I have added the path to my project folder to my $PYTHONPATH and have checked that its there.
I have also used the second answer here to force check if its in my sys.path:
How to add something to PYTHONPATH?
I have tried force running it with 'python -m flask run' as advised here
Flask can't find app file
I ran export 'FLASK_APP=myapp.py' as advised in the official docs.
I have also tried running with with 'FLASK_DEBUG=1' and this is the output:
127.0.0.1 - - [05/Mar/2017 16:55:13] "GET /? __debugger__=yes&cmd=resource&f=style.css HTTP/1.1" 200 -
127.0.0.1 - - [05/Mar/2017 16:55:13] "GET /?__debugger__=yes&cmd=resource&f=jquery.js HTTP/1.1" 200 -
127.0.0.1 - - [05/Mar/2017 16:55:13] "GET /?__debugger__=yes&cmd=resource&f=debugger.js HTTP/1.1" 200 -
127.0.0.1 - - [05/Mar/2017 16:55:13] "GET /?__debugger__=yes&cmd=resource&f=ubuntu.ttf HTTP/1.1" 200 -
127.0.0.1 - - [05/Mar/2017 16:55:13] "GET /?__debugger__=yes&cmd=resource&f=console.png HTTP/1.1" 200 -
127.0.0.1 - - [05/Mar/2017 16:55:13] "GET /?__debugger__=yes&cmd=resource&f=console.png HTTP/1.1" 200 -
Whats even stranger is that I have another Flask project folder with its own env and that runs just fine, I can't see whats different with this one though.
I should add that everything in my app file is setup correctly with a Flask app initialized.
Also, if I run 'python -mflask run' (with DEBUG on) I get this error on the page when viewed locally:
__main__.NoAppException
but just 'flask run' displays this:
flask.cli.NoAppException

OK I figured this out, I have both Python 2.7 and 3 on my machine and there was a module I had imported that was installed on the other version of Python to the one I was using in my env. A very noob error I suppose!

Problems with Django static files

I have downloaded this project and trying to make it work: http://sourceforge.net/p/etconf/git/ci/master/tree/
The problem is, after I managed to install all prerequisites, it runs, but does not load staticfiles. According to settings it should look for them in the /media directory, but however I tried to change MEDIA_ROOT, STATIC_URL and various different parameters in settings.py it shows in the console:
[09/Oct/2015 10:56:08] "GET /static/configurator/admin/css/base.css HTTP/1.1" 404 2281
[09/Oct/2015 10:56:08] "GET /static/configurator/configurator.css HTTP/1.1" 404 2275
[09/Oct/2015 10:56:08] "GET /static/configurator/prototype.js HTTP/1.1" 404 2263
[09/Oct/2015 10:56:08] "GET /static/configurator/configurator.js HTTP/1.1" 404 2272
What am I doing wrong? Maybe it's some sort of old bug or something (project is using python 2 and django 1.1)

I guess you missed to run below command after configuration:
python manage.py collectstatic
What I see is you get 404 error for static files which means that the files are not located where it is been searched for.

Django not picking up new changes

I'm running an old branch A from my GitHub repo, and Django is not picking up any of the static files. What's weird is that if I make any text changes to the templates, it doesn't pick those up either. I've tried refreshing the page, opening Chrome in Incognito, restarting the server, etc. -- nothing is working.
After running the development server in a different branch B, and switching back to this one, Django acted as if I was still running on branch B (got not 404 errors):
$ ./manage.py runserver
0 errors found
Development server is running at http://127.0.0.1:8000/
Quit the server with CONTROL-C.
[12/Sep/2012 23:25:48] "GET /interviews/ HTTP/1.1" 200 13295
But as soon as I restarted the server, it reverted to the un-changed version of branch A (none of the changes were picked up and no static files could be found):
$ ./manage.py runserver
Validating models...
0 errors found
Development server is running at http://127.0.0.1:8000/
Quit the server with CONTROL-C.
[12/Sep/2012 23:26:20] "GET /interviews/ HTTP/1.1" 200 13295
[12/Sep/2012 23:26:20] "GET /static/js/plugins.js HTTP/1.1" 404 2653
[12/Sep/2012 23:26:20] "GET /static/js/jquery-1.7.1.min.js HTTP/1.1" 404 2653
[12/Sep/2012 23:26:20] "GET /static/css/style.css?v=2 HTTP/1.1" 404 2653
[12/Sep/2012 23:26:20] "GET /static/js/script.js HTTP/1.1" 404 2653
Between the two branches, settings.py and the static folder are identical so I'm not even sure where to begin with troubleshotting.

DEBUG = True
Check this. Built-in Django dev server does not work with static files if DEBUG = False.