Discover Flask, Part 10 - Configuration

In Part 10 of this series, we'll update our configuration settings.

[ninadbandodkar]

For windows users having trouble with environment variable do this:

1. Go to system and then Advanced SYstem settings .... then click on Environment Variables
2. Set a new user variable with the variable name:APP_SETTINGS and variable
3. Now press ok and close and also restart the command prompt
4. After starting a new command prompt, start the virtualenv and check again in python shell if all was set correctly

[RomanDodin]

Just wanted to say that you, Michael, is a very good narrator and lector.

[Colstonewall]

Thanks for the thorough explanations on this. I must admit I was a little confused about the app.config settings (as far as using different versions) and you explained it perfectly.

[Pcketfullfsunshine]

Thank you so much for this series, it's incredibly useful.

[bitwiseParody]

I think better than environment variables is a settings file that holds the k:v pairs.  It's more reliable in the case where you don't have complete (or even sudo ) control over your environment.. and can hold all kinds of extra info, like admin emails, pipeline lists, ..whatever you need.

[susantshrestha]

hey i have encountered a the error is when i try to export APP_SETTINGS, I get invalid syntax...
and i am using linux ubuntu ... thanx

[DavidJones-lpwz]

Michael, Im back at this part from parts 13 & 14, the reason being that everytime I come back to this after a day or so I can't get the app to run locally and when I try to run db_create.py or config.py I get error messages like this: 'raise KeyError(key)
KeyError: 'DATABASE_URL' and it seems that I have to go back to what you did at 11:44 on this video and re-enter this: export and then after doing that it works fine again locally, why do I have to keep doing this though?

[Toomey]

anyone getting this error when I set the environment variable?
ImportStringError: import_string() failed for '"config'. Possible reasons are:


- missing __init__.py in a package;
- package or module path not included in sys.path;
- duplicated package or module name taking precedence in sys.path;
- missing module, class, function or variable;


Debugged import:


- '"config' not found.


Original exception:


ModuleNotFoundError: No module named '"config'

[enokoner]

and here is where I swtich to a vagrant box (docker is from my nightmares)

[LuxisD]

When typing "export in the Windows cmd, "export" is not recognized as a command?

[russellculver]

Not entirely sure what's going wrong here. I've even confirmed the table exists with SQLiteBrowser, however I keep getting this OperationError on the debug UI when I go to log in:

OperationalError: (sqlite3.OperationalError) no such table: posts [SQL: u'SELECT posts.id AS posts_id, posts.title AS posts_title, posts.description AS posts_description \nFROM posts']

I've deleted and re-created the database, run the dbcreate.py script and still no luck. Triple checked my syntax.

[waqardetho]

In windows 10 I am setting up an environment variable like this
Variable name: APP_SETTINGS
Variable value: config.DevelopmentConfig
But its not working what should I do?

[ericmacleod]

Why did it take you several hours to re-upload 7 videos?