Bugfix: Make sure ensure_python() installs Python when conditions are met

[EpiX-1]

The issue

The issue arises when a user tries to create a new venv with a version of Python that hasn't been installed PREVIOUSLY with pyenv. Normally, pipenv should handle the installation of the desired Python version thanks to an installer (pyenv) before creating the new venv. However, this is not the case, and pipenv creates a new venv with the same Python version as the system one.

This behavior happens whether or not the conditions for the installation are met:

• PIPENV_YES is set
• The user replied y when prompted: "Would you like us to install {version} with {installer}?"

Expected behavior

The Python version of the .venv should match the version specified in the Pipfile.

Actual behavior

The Python version of the .venv is the same as the one from the system.

Reproduce the issue

1. Install pipenv with pip install pipenv. For the rest of the steps, it is assumed that the system Python version is 3.13.
2. Create the following Pipfile:

[[source]]
url = "https://pypi.org/simple"
verify_ssl = true
name = "pypi"

[packages]

[dev-packages]

[requires]
python_version = "3.8"

3. Create the venv with the command: pipenv install
4. Notice that the venv created uses the system Python version (3.13) rather than the one specified in the Pipfile (3.8)

The fix

Remove a useless else statement that would cause the program to exit abruptly.

[matteius]

@EpiX-1 could you install pre-commit and run pre-commit install or otherwise fix the ruff linter issue(s)? Ill be taking a look in more detail soon.

[matteius]

Actually the ruff issues aren't related to your change -- I am investigating them.

[matteius]

@EpiX-1 would you be able to add a news fragment though?

[Copilot]

Pull Request Overview

This PR ensures that when PIPENV_YES is set (or the user confirms), the Python installer logic always runs by removing an unnecessary else that caused an early exit.

• Removed a redundant else to prevent premature abort
• Dedented and cleaned up the installation spinner block
• Adjusted formatting of status and print statements

Comments suppressed due to low confidence (1)

pipenv/utils/virtualenv.py:331

• Consider adding a test to verify that the installation path is triggered when PIPENV_YES is set and the specified Python version is not already installed.

            console.print(

[EpiX-1]

@EpiX-1 would you be able to add a news fragment though?

Sure, I'll do it tomorrow.