Which shortcut is used to comment and uncomment multiple lines of code in Python?

The shortcut to comment and uncomment multiple lines of code in Python is indeed to highlight the lines and press Ctrl + /. This command works effectively in many code editors and integrated development environments (IDEs) such as Visual Studio Code, PyCharm, and Jupyter Notebook.

When you highlight the lines and use this shortcut, the IDE automatically adds a hash (#) symbol at the start of each selected line, converting the lines into comments. If you invoke the shortcut again on the same highlighted lines, the IDE removes the hash symbol, turning the comments back into active code. This functionality facilitates quick editing, allowing programmers to easily disable a block of code during testing or debugging without having to delete it.

Other options do not provide the same commenting functionality in Python. For example, simply using Ctrl + C would only copy the highlighted lines, and Alt + / or Shift + / do not have a standard shortcut for commenting code in Python across the most widely used editors. Therefore, the specific combination of highlighting and pressing Ctrl + / is the most efficient and widely recognized shortcut for commenting and uncommenting multiple lines of code.