How can I get flask to run correctly in VS Code?

Question

The Problem:

I have moved over to Visual Studio Code in order to try to learn to program in a real IDE, however I am low in experience.

What I have done:

I have done the following to get it up and running:

Installed:
  VS Code,
  Python, 
  Postgres,
  PGAdmin
  pip

I have:

Changed the path of python following a tutorial.
Installed flask, flask-session and SQLAlchemy.
Used the following "set FLASK_APP=application.py" and "set FLASK_DEBUG=1" and also "set DATABASE_URL= url of database" both in cmd and in visual studio terminal

The Error Message

However whenever I run flask run I get the following error message in the CMD

"flask no se reconoce como un comando interno o externo programa o archivo por lotes ejecutable"

In visual studio I get this error message when I run 'flask run':

flask : El término 'flask' no se reconoce como nombre de un cmdlet, función, archivo de script o programa ejecutable. Compruebe si
escribió correctamente el nombre o, si incluyó una ruta de acceso, compruebe que dicha ruta es correcta e inténtelo de nuevo.
En línea: 1 Carácter: 1
+ flask run
+ ~~~~~
    + CategoryInfo          : ObjectNotFound: (flask:String) [], CommandNotFoundException
    + FullyQualifiedErrorId : CommandNotFoundException

The Question:

I am using Windows 10. How can I get this working?

It might be helpful to know the english version of this error, if possible. — Ken Kinder
– Ken Kinder, Commented Jun 22, 2020 at 18:38

Sanket Singh · Accepted Answer · 2020-06-22 19:15:02Z

4

Imp: In Windows 10: Visual studio's integrated terminal is PowerShell. Whereas it was cmd.exe for earlier.

Do:

On Command Prompt:

set FLASK_APP=application.py
On powershell

$env:FLASK_APP = "application.py"

python -m flask run . Try to use this and if this will not work you have to install flask using pip install flask or pip3 install flask in your local .

then use flask run

For more info check: https://pypi.org/project/Flask/

edited Jun 22, 2020 at 19:15

answered Jun 22, 2020 at 18:21

Sanket Singh

1,3741 gold badge12 silver badges28 bronze badges

Sign up to request clarification or add additional context in comments.

11 Comments

Kwsswart Over a year ago

should i do this in cmd or visual

Sanket Singh Over a year ago

Visual's terminal you can use. To open it press Ctrl+` .

Kwsswart Over a year ago

this doesnt work unfortunately getting the same response

Sanket Singh Over a year ago

python -m flask run . Try to use this and if this will not work you have to install flask using pip install flask in your local . If you have pip3 installed, use pip3 install flask.

Kwsswart Over a year ago

Sofar this would be working how could i get it so that the database url is set in with similar commands would $DATABASE_URL = "url to database" work?

|

Dwij Mehta · Accepted Answer · 2020-06-22 18:34:54Z

0

If you have not installed flask using $ pip install then the problem could be that flask is not added as a PATH environment variable.

Try adding flask to your env variables. If this doesn't work then try running $ python -m flask run as a temporary workaround.

answered Jun 22, 2020 at 18:34

Dwij Mehta

987 bronze badges

2 Comments

Kwsswart Over a year ago

I have not setup an environment because didnt think needed to... I just have python installed and used pip to install libraries directly?

Kwsswart Over a year ago

yes after following the above to set the flask app to application.py all i have now is its saying database_url not set

Collectives™ on Stack Overflow

How can I get flask to run correctly in VS Code?

2 Answers 2

11 Comments

2 Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

11 Comments

2 Comments

Your Answer

Sign up or log in

Post as a guest

Related