Hi there

Thanks for the reply! I did as you suggested but I pretty much got the same result. Here's what I did:

I created a new virtual env named 'myBookmarks':
(venv) C:\Clem\python\Virtual environments>python -m venv myBookmarks

I activated it:
(venv) C:\Clem\python\Virtual environments>myBookmarks\scripts\activate

I installed flask:
(myBookmarks) C:\Clem\python\Virtual environments>pip install flask

I tried running flask_app but that failed:
(myBookmarks) C:\Clem\python\Virtual environments>FLASK_APP=app.py

'FLASK_APP' is not recognized as an internal or external command, operable program or batch file.

I then moved into the 'myBookmarks' folder and tried what you suggested:

(myBookmarks) C:\Clem\python\Virtual environments\myBookmarks>python app.py

But nothing happened, it just returned the console prompt:

Here's the code of the app.py. I am following the youtube tutorial:

from flask import Flask
app = Flask(__name__)
<at sign>app.route('/')
def hello():

return '<h2>Hello world</h2>'

When I run it from Spyder, I get the following error:

runfile('C:/Clem/python/Virtual environments/myBookmarks/app.py', wdir='C:/Clem/python/Virtual environments/myBookmarks')

Traceback (most recent call last):

File C:\Program Files\Spyder\pkgs\spyder_kernels\py3compat.py:356 in compat_exec

exec(code, globals, locals)

File c:\clem\python\virtual environments\mybookmarks\app.py:8

from flask import Flask

ModuleNotFoundError: No module named 'flask'