CODEWITHSUNDEEP
pythonwindowsflask
Nsikan Adaowo
Nsikan Adaowo

Reputation: 341

Why does running `flask run` on Windows result in "flask is not recognized as an internal or external command, operable program or batch file"

I needed to setup Flask for windows, so I ran the following commands:

set FLASK_APP=application.py
set FLASK_DEBUG=1
set DATABASE_URL='postgres.......' =>(the credential given by the Heroku account)
flask run

But when I hit enter on the flask run, I get an error that says -

flask is not recognized as an internal or external command, operable program or batch file

Why is this not working? I've been trying to work on it but I'm still having the same error message.

What could be the issue?

Upvotes: 22

Views: 89222

Answers (14)

João Nogueira
João Nogueira

Reputation: 1

I had the same problem, my solution was to create a venv and then activate it

python -m venv venv

.\venv\Scripts\activate

Upvotes: 0

Hoko L
Hoko L

Reputation: 107

Try using the command python first.

Upvotes: 0

Abhijit Kumbhar
Abhijit Kumbhar

Reputation: 961

Verify you have selected the correct Python interpreter. I was also facing the same issue but after selecting the proper Python interpreter and activating the virtual environment it is working fine.

Upvotes: 0

Parham
Parham

Reputation: 11

i tried

python -m flask

my problem was migrating a database and i couldn't run flask, so i wrote (python -m) before my command

Upvotes: 0

AbdulHafeez
AbdulHafeez

Reputation: 29

If you're using a windows computer then run:

flask --app {name_of_file}

Run after setting:

set FLASK_APP=main.py

In my case: flask --app main run.

Upvotes: 1

Andrew B
Andrew B

Reputation: 1

Include your python version python3 -m flask run

Upvotes: 0

Palash Mondal
Palash Mondal

Reputation: 538

Maybe you are working in another directory where the Flask is not installed.

Just install Flask on the current directory:

pip install flask

Upvotes: 6

sule mohammed
sule mohammed

Reputation: 137

Make sure you've saved the application.py and the app variable exists.

then run python -m flask run ,

Upvotes: 4

Ashish Kumar
Ashish Kumar

Reputation: 77

uninstall flask using the following command

pip uninstall flask

close cmd and open cmd as Administrator now run

pip install flask

check:

flask --version

Upvotes: 4

Dawn
Dawn

Reputation: 3628

If you have Anaconda, use python -m flask run from Anaconda Prompt when you are on the folder of the script app.py.

Upvotes: 1

kidbilly
kidbilly

Reputation: 730

Try using:

python -m flask run

Also make sure you are in the same directory as application.py

Upvotes: 36

allan200
allan200

Reputation: 11

I had this same issue and resolved it by running this in CMD, where the path is set to your Python scripts folder: 

set PATH=C:\Users\YOUR_USER_NAME\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.8_qbz5n2kfra8p0\LocalCache\local-packages\Python38\Scripts

The error is related to the "WARNING" that may be shown when running 'pip install flask'. You can also confirm whether you installed flask successfully by using 'pip show flask'.

Upvotes: 1

KnowledgeSeeeker
KnowledgeSeeeker

Reputation: 724

I faced the same issue. Perhaps you missed the message you received while installing 'flask'. While running pip install flask I received

WARNING: The script flask.exe is installed in 'C:\Users\ankur.kulshrestha\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.8_qbz5n2kfra8p0\LocalCache\local-packages\Python38\Scripts' which is not on PATH. Consider adding this directory to PATH or, if you prefer to suppress this warning, use --no-warn-script-location.

Either set the path in your PATH env variable or use the complete path while running flask run.

Upvotes: 2

Ramu
Ramu

Reputation: 21

install flask: pip install flask in the working directory where application.py file is located.

Upvotes: 0

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