CODEWITHSUNDEEP
pythonvisual-studio-codepylance
Jag99
Jag99

Reputation: 754

import flask could not be resolved from source pylance

I'm learning Python and part of the course setting up a webserver using Flask. I followed the steps as per the Flask installation documentation and for some reason the flask module is underlined as shown below. When I hover my mouse, I get additional information as below.

import flask could not be resolved from source pylance

The server is running fine though. Should i be ignoring the notification? If not what dependency have i missed?

Below is the code to setup the server

from flask import Flask
app = Flask(__name__)

@app.route('/')
def hello_world():
return 'Hello, World!'

enter image description here

enter image description here

Upvotes: 34

Views: 108663

Answers (9)

Md. Saroar Jahan
Md. Saroar Jahan

Reputation: 556

  1. Firstly, create a virtual environment on your terminal.
  2. Then install Flask by running pip install flask.
  3. After installing, press CTRL+SHIFT+P.
  4. Search for Python Interpreter.
  5. Select your virtual environment.

The problem will be fixed. I have also faced the same issue, but I resolved it by following this procedure.

Upvotes: 42

Alankrith G
Alankrith G

Reputation: 117

This answer is for posterity

  1. Check whether the virtual env is activated and the right interpreter selected (you can see this in bottom-right of VS code).
  2. Check whether the dependency which you have installed is present in virtual env or not. ex: pip show flask in terminal should give the flask location in virtual env not global.
  3. If above 2 steps didn't solve the problem then use Ctrl+Shift+P and type reload window and click it. This should solve the issue as it did for me.

Upvotes: 0

BhavyaMPatel
BhavyaMPatel

Reputation: 11

All these answers are very helpful but if you are still stuck then try this method in which after creating a Virtual Environment we will select our interpreter path manually:

First open your project in VSCode. Make Venv and then at right bottom of your editor see there is an option to select Python version like this:

Link To Image

Then click on python version and you can see window like this:

Select Interpretor

Then click on "Enter interpreter path" and Select Interpreter that you created recently which is located inside the scripts folder:

Select Interpretor

Hope this helps. Happy coding!

Upvotes: 0

Saroar Zahan Sojib
Saroar Zahan Sojib

Reputation: 260

go to your vs code terminal then type this command

  1. sudo apt install python3-venv

  2. python3 -m venv my-project-env

  3. source my-project-env/bin/activate

  4. pip install flask

  5. after install CTRL+SHIFT+P and search for Python Interpreter enter image description here

  6. Select Your virtual Environment my-project-env which has created in above enter image description here

  7. now check the output. problem will be solved like this. enter image description here

Upvotes: 6

Bhumika Sethi
Bhumika Sethi

Reputation: 81

This happens when the Python interpreter on VS Code is not the same as that in your virtual environment. Click on the Python version on the lower left corner. In the "Select Interpreter" bar, select the venv Python or create a new interpreter path by copying the same from your Python file in the venv/bin directory.

Upvotes: 7

Levi L.
Levi L.

Reputation: 11

In case you are using a virtual environment;

  1. Create a virtual environment.

    python3.9 -m venv --without-pip virtual

  2. Activate the virtual environment.

    source virtual/bin/activate

  3. Install the pip for the created virtual environment.

    curl https://bootstrap.pypa.io/get-pip.py | python

  4. Install flask into the virtual env.

    pip install flask

  5. Create the python file. For your case,

    touch server.py

  6. Open file and import the module

  7. If it underlines again, install pip again while the .py file is still open.

    pip install flask

Upvotes: 1

Bibin
Bibin

Reputation: 409

In VS Code, Go to "Python: Select interpreter" by Ctrl + Shift + P. Choose python interpreter ('base': conda)

Upvotes: 8

deji techserv
deji techserv

Reputation: 1

I experienced the same situation until I changed the virtual environment of my VS Code to indicate the correct value that I should use:

screenshot of my VSCode

Upvotes: 0

Jill Cheng
Jill Cheng

Reputation: 10364

When I did not install the module "flask", I ran into the problem you described:

enter image description here

The reason is that the module "flask" is not installed in the Python environment we currently use in VSCode.

Please use the shortcut key Ctrl+Shift+` to open a new VSCode terminal, it will automatically enter the currently selected environment, and then use the command "pip show flask" to check the installation location of the module "flask":

enter image description here

If it still shows that the module could not be resolved, it is recommended that you reinstall the module "flask".

Upvotes: 22

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