I activated my virtual environment in vs code. In the PowerShell where my environment was activated, I installed Flask successfully. Then I ran this code in my file main.py:
from flask import Flask
app = Flask(name)

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

if name == “__main”:
app.run()

But when I try to run the command ‘python .main.py’ in the PowerShell where my environment is activated, it displays:
(venv) PS C:UsersLenovoDesktopmyprj>
It doesn’t give me the link to my web.

I have checked the previous stack overflow question about it. The answers couldn’t solve my problem. I watched a video on it, but it didn’t work.
I also faced problems while trying to set up my virtual environment. So I setted up this way:

1. pip install –user virtualenv
2. python -m virtualenv venv
3. Set-ExecutionPolicy RemoteSigned -Scope Process
4. venvscriptsactivate