Python Extension Suggestion for macOS system Python is not actionable

[EdBlankenship]

Issue Type: Bug

The Python extension is giving me a suggestion but doesn't tell me how to do this. "Selected interpreter is macOS system Python which is not recommended. Please select different interpreter."

VS Code version: Code 1.23.1 (d0182c3417d225529c6d5ad24b7572815d0de9ac, 2018-05-10T16:03:31.083Z)
OS version: Darwin x64 17.5.0

System Info

Item	Value
CPUs	Intel(R) Core(TM) i7-6820HQ CPU @ 2.70GHz (8 x 2700)
GPU Status	2d_canvas: enabled flash_3d: enabled flash_stage3d: enabled flash_stage3d_baseline: enabled gpu_compositing: enabled multiple_raster_threads: enabled_on native_gpu_memory_buffers: enabled rasterization: enabled video_decode: enabled video_encode: enabled vpx_decode: enabled webgl: enabled webgl2: enabled
Load (avg)	2, 2, 2
Memory (System)	16.00GB (0.03GB free)
Process Argv	/Applications/Visual Studio Code.app/Contents/MacOS/Electron -psn_0_16969774
Screen Reader	no
VM	0%

Extensions (15)

Extension	Author (truncated)	Version
vscode-docker	Pet	0.0.26
scala	dal	0.0.5
vscode-dash	dee	1.10.0
php-debug	fel	1.12.3
php-intellisense	fel	2.3.1
composer	ika	0.7.1
mssql	ms-	1.3.1
python	ms-	2018.4.0
azure-account	ms-	0.4.0
team	ms-	1.133.0
debugger-for-chrome	msj	4.4.3
laravel-blade	one	1.18.0
laravel5-snippets	one	1.4.0
laravel-helpers	raf	0.2.2
laravel-artisan	rya	0.0.20

[brettcannon]

You can either click down on the status bar where your interpreter is listed or run Select Interpreter and then select another option. I will leave this open, though, to consider tweaking the message.

[brettcannon]

We should provide a button to open our docs on how to handle this or something.

[qubitron]

Proposed design
If the only Python interpreter available is the macOS system install, the text should say:

The macOS system install of Python is not recommended, some functionality
in the extension will be limited. Install another version of Python for the 
best experience.

[ Learn more ]

Learn more should link to: https://code.visualstudio.com/docs/python/python-tutorial#_prerequisites

If there are multiple versions of Python installed

• We should NOT select the macOS install of python by default
• If the user selects the macOS system install, we show the following message:

You have selected the macOS system install of Python, which is not not 
recommended for use with the Python extension. Some functionality will
be limited, please select a different interpreter.

[ Select Interpreter ]

Select interpreter opens up the select python interpreter command.

[brettcannon]

This is working as you outlined, @qubitron , so just need you to sign off.

[DonJayamanne]

@brettcannon This is not working.