From 77bc74dce52e3d0f340fe726f2b3819ffbbabd9d Mon Sep 17 00:00:00 2001
From: Jeremy Fleischman <jeremyfleischman@gmail.com>
Date: Tue, 16 Aug 2022 12:33:34 -0700
Subject: [PATCH] Actually filter out missing interpreters (#5262)

* Actually filter out missing interpreters

This fixes https://github.com/pypa/pipenv/issues/5261.

Before this change, I would get a "The Python interpreter can't be
found" error when running `pipenv install --system` with a python3 but
no python.
---
 .github/PULL_REQUEST_TEMPLATE.md | 2 +-
 README.md                        | 2 +-
 news/5261.bugfix.rst             | 1 +
 pipenv/utils/shell.py            | 1 +
 4 files changed, 4 insertions(+), 2 deletions(-)
 create mode 100644 news/5261.bugfix.rst

diff --git a/.github/PULL_REQUEST_TEMPLATE.md b/.github/PULL_REQUEST_TEMPLATE.md
index 325d14db..f7c77d13 100644
--- a/.github/PULL_REQUEST_TEMPLATE.md
+++ b/.github/PULL_REQUEST_TEMPLATE.md
@@ -19,7 +19,7 @@ How does this pull request fix your problem? Did you consider any alternatives?
 ### The checklist
 
 * [ ] Associated issue
-* [ ] A news fragment in the `news/` directory to describe this fix with the extension `.bugfix`, `.feature`, `.behavior`, `.doc`. `.vendor`. or `.trivial` (this will appear in the release changelog). Use semantic line breaks and name the file after the issue number or the PR #.
+* [ ] A news fragment in the `news/` directory to describe this fix with the extension `.bugfix.rst`, `.feature.rst`, `.behavior.rst`, `.doc.rst`. `.vendor.rst`. or `.trivial.rst` (this will appear in the release changelog). Use semantic line breaks and name the file after the issue number or the PR #.
 
 <!--
 ### If this is a patch to the `vendor` directory...
diff --git a/README.md b/README.md
index f9e7cc1e..64fdcb47 100644
--- a/README.md
+++ b/README.md
@@ -56,7 +56,7 @@ Or, if you\'re using FreeBSD:
 Or, if you\'re using Gentoo:
 
     sudo emerge pipenv
-    
+
 Or, if you\'re using Void Linux:
 
     sudo xbps-install -S python3-pipenv
diff --git a/news/5261.bugfix.rst b/news/5261.bugfix.rst
new file mode 100644
index 00000000..fac2ce9b
--- /dev/null
+++ b/news/5261.bugfix.rst
@@ -0,0 +1 @@
+Fix "The Python interpreter can't be found" error when running ``pipenv install --system`` with a python3 but no python.
diff --git a/pipenv/utils/shell.py b/pipenv/utils/shell.py
index 030fb19b..362290fa 100644
--- a/pipenv/utils/shell.py
+++ b/pipenv/utils/shell.py
@@ -446,6 +446,7 @@ def project_python(project, system=False):
         python = project._which("python")
     else:
         interpreters = [system_which(p) for p in ("python", "python3")]
+        interpreters = [i for i in interpreters if i]  # filter out not found interpreters
         python = interpreters[0] if interpreters else None
     if not python:
         click.secho("The Python interpreter can't be found.", fg="red", err=True)