Error: Could not locate a Flask application.

[gchristofferson]

After following these steps in the Python Flask tutorial:
https://code.visualstudio.com/docs/python/tutorial-flask#_refactor-the-project-to-support-further-development

I can only run the app in the python debug console. I can't run it in powershell, although I am following the same steps, I get this error:

Error: Could not locate a Flask application. You did not provide the "FLASK_APP" environment variable, and a "wsgi.py" or "app.py" module was not found in the current directory.

[kraigb]

Under Powershell, you have to set the FLASK_APP environment variable as follows:

$env:FLASK_APP = "webapp"

Then you should be able to run "python -m flask run" inside the hello_app folder. In other words, PowerShell manages environment variables differently, so the standard command-line "set FLASK_APP=webapp" won't work.

Let me know if that solves your problem.

[gchristofferson]

Yes that worked. Thank you!

…

On Thu, Sep 27, 2018, 9:18 AM Kraig Brockschmidt ***@***.***> wrote: Under Powershell, you have to set the FLASK_APP environment variable as follows: $env:FLASK_APP = "webapp" Then you should be able to run "python -m flask run" inside the hello_app folder. In other words, PowerShell manages environment variables differently, so the standard command-line "set FLASK_APP=webapp" won't work. Let me know if that solves your problem. — You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub <#1881 (comment)>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AYCluBoxxhC4DAeU3y-y5S-B3hNE_J2eks5ufPpzgaJpZM4W7uOq> .

[kraigb]

Great! Thanks for filing the issue, too; it's not quite a detail I want to put in the docs proper, so having the issue here allows folks to find the solution if they run into the same problem.

[CarlosEduardo12]

Under Powershell, you have to set the FLASK_APP environment variable as follows:

$env:FLASK_APP = "webapp"

Then you should be able to run "python -m flask run" inside the hello_app folder. In other words, PowerShell manages environment variables differently, so the standard command-line "set FLASK_APP=webapp" won't work.

Let me know if that solves your problem.

Thanks i had the same problem and that worked!!

[schanore]

Under Powershell, you have to set the FLASK_APP environment variable as follows:

$env:FLASK_APP = "webapp"

Then you should be able to run "python -m flask run" inside the hello_app folder. In other words, PowerShell manages environment variables differently, so the standard command-line "set FLASK_APP=webapp" won't work.

Let me know if that solves your problem.

I am facing this issue in Anaconda prompt? can you help me with the solution ?

[StrawberryStatement]

Under Powershell, you have to set the FLASK_APP environment variable as follows:
$env:FLASK_APP = "webapp"
Then you should be able to run "python -m flask run" inside the hello_app folder. In other words, PowerShell manages environment variables differently, so the standard command-line "set FLASK_APP=webapp" won't work.
Let me know if that solves your problem.

I am facing this issue in Anaconda prompt? can you help me with the solution ?

Have you solved it?

[Shubham-nodia]

Error: Could not locate a Flask application. You did not provide the "FLASK_APP" environment variable, and a "wsgi.py" or "app.py" module was not found in the current directory.

[drinkmorewaters]

For others try export FLASK_APP=hello.py the name of your entry file being whatever you called it export FLASK_APP=app.py, export FLASK_APP=this.py upto you.

[DinaTaklit]

For others try export FLASK_APP=hello.py the name of your entry file being whatever you called it export FLASK_APP=app.py, export FLASK_APP=this.py upto you.

Thank you this solved the issue for me :D

[marcelogere]

Under Powershell, you have to set the FLASK_APP environment variable as follows:

$env:FLASK_APP = "webapp"

Then you should be able to run "python -m flask run" inside the hello_app folder. In other words, PowerShell manages environment variables differently, so the standard command-line "set FLASK_APP=webapp" won't work.

Let me know if that solves your problem.

This work for me, thanks!!!

[kraigb]

@JoshuaPartlow just a reminder note to check the VS Code docs and make sure the PowerShell variant reported here is included.