Cannot import flask_wtf into Python 3.9 venv

Question

No matter what I do, I cannot import flask_wtf, or any variation of it - flask-wtf, flask_WTF, flask-WTF, etc. My linter doesn't recognize it (pylance in VSCode) - gives me error:

Import "flask_wtf" could not be resolvedPylancereportMissingImports

When I try to run the code, I get:

    Traceback (most recent call last):
  File "c:\Users\btaylor\repots\brannen\digitalocean\flask_app\forms.py", line 1, in <module>
    from flask_wtf import Flaskform
ModuleNotFoundError: No module named 'flask_wtf'

OS is Windows 10. VSCode 1.66.1

Code:

from flask_wtf import Flaskform
from wtforms import (StringField, TextAreaField, IntegerField, BooleanField,
                     RadioField)
from wtforms.validators import InputRequired, Length

class CourseForm(FlaskForm):
    title = StringField('Title', validators=[InputRequired(),
                                             Length(min=10, max=100)])
    description = TextAreaField('Course Description',
                                validators=[InputRequired(),
                                            Length(max=200)])
    price = IntegerField('Price', validators=[InputRequired()])
    level = RadioField('Level',
                       choices=['Beginner', 'Intermediate', 'Advanced'],
                       validators=[InputRequired()])
    available = BooleanField('Available', default='checked')

I built a fresh directory, pip uninstalled Flask, created venv dir, activated, pip install the specific versions on this site: digital ocean - How To Use and Validate Web Forms with Flask-WTF: https://www.digitalocean.com/community/tutorials/how-to-use-and-validate-web-forms-with-flask-wtf and copied their code into the .py file.

My steps to install the libraries.

• .\venv\Scripts\activate

• pip install flask==2.0.2

• pip install Flask-WTF==1.0.0

• pip list

  Package Version

  ---

  click 8.1.2 colorama 0.4.4 Flask 2.0.2 Flask-WTF 1.0.0 itsdangerous 2.1.2 Jinja2 3.1.1 MarkupSafe 2.1.1 pip 22.0.4 setuptools 58.1.0 Werkzeug 2.1.1 WTForms 3.0.1

pip freeze shows:

(venv) PS C:\Users\btaylor\repots\brannen\digitalocean> pip freeze
click==8.1.2
colorama==0.4.4
Flask==2.0.2
Flask-WTF==1.0.0
itsdangerous==2.1.2
Jinja2==3.1.1
MarkupSafe==2.1.1
Werkzeug==2.1.1
WTForms==3.0.1

Snip of folder structure

Answer 1

I figured it out. VSCode is running the Global Python. However, if I enter into the cli IDE in the folder, it runs the local installation of Python in the virtual environment.

I found the python executable in the venv\Scripts folder. In VSCode, entering (Windows) control-alt-P , select Python Interpreter, select my workspace that I'm in, "select at the workspace level", and then enter the path to the ..venv\Scripts\Python.exe .

Once VSCode is set to run the Python.exe from inside the virtual environment, then Python sees the additional modules installed in the venv.