I. Commands to start working in virtual environment

# 1 Create virtual environment -> plenty of guides online, look them up
    python -m venv /path/to/new/virtual/environment # create virtual environment
    Set-ExecutionPolicy -ExecutionPolicy Unrestricted -Scope Process # This gives you 
    # permission to run scripts in the current powershell instance
    .venv\Scripts\activate # This runs the script to activate the virtual environment

# 2 Set correct python path so you install packages on the right place (inside the virtual environment)
    # 
    # Windows + R
    # sysdm.cpl
    # OK
    # Advanced
    # Environment Variables
    # User Variables For <username>
    # New...
    # Variable Name: 
    # path
    # Variable Value:
    # /path/to/new/virtual/environment
    # The path given here should be abolute, not relative
    # that means it should start with C:/... or D:/... and not with ./ or ../ or similar
    # create second variable for the scripts:
    # write ; after the path of the variable you just created
    # then append /path/to/new/virtual/environment/Scripts
    # the final result looks like this
    # /path/to/new/virtual/environment;/path/to/new/virtual/environment/Scripts

II. Install requirements

# 1 Instead of Flask-Sessions I am using Flask-Sessions2 because Flask-Sessions throws an 
# error when installing msgspec and I can't get past it
    pip install -r requirements.txt

III. Run Flask:

flask run