From 88cbac0495b45e7ecfeba4fbab0c20d5e12807e6 Mon Sep 17 00:00:00 2001
From: Ross Burton <ross.burton@arm.com>
Date: Thu, 19 Mar 2026 19:16:08 +0000
Subject: [PATCH] [libc++] Unify python shebangs (#187258)

As per PEP-0394[1], there is no real concensus over what binary names
Python has, specifically 'python' could be Python 3, Python 2, or not
exist.

However, everyone has a python3 interpreter and the scripts are all
written for Python 3. Unify the shebangs so that the ~50% of shebangs
that use python now use python3.

[1] https://peps.python.org/pep-0394/
---
 libcxx/test/libcxx-03/transitive_includes/to_csv.py      | 2 +-
 libcxx/test/libcxx/transitive_includes/to_csv.py         | 2 +-
 libcxx/utils/ci/lnt/commit-watch                         | 2 +-
 libcxx/utils/ci/lnt/run-benchmarks                       | 2 +-
 libcxx/utils/generate_abi_list.py                        | 2 +-
 libcxx/utils/generate_escaped_output_table.py            | 2 +-
 libcxx/utils/generate_extended_grapheme_cluster_table.py | 2 +-
 libcxx/utils/generate_extended_grapheme_cluster_test.py  | 2 +-
 libcxx/utils/generate_feature_test_macro_components.py   | 2 +-
 libcxx/utils/generate_indic_conjunct_break_table.py      | 2 +-
 libcxx/utils/generate_iwyu_mapping.py                    | 2 +-
 libcxx/utils/generate_width_estimation_table.py          | 2 +-
 libcxx/utils/run.py                                      | 2 +-
 libcxx/utils/ssh.py                                      | 2 +-
 libcxx/utils/sym_diff.py                                 | 2 +-
 15 files changed, 15 insertions(+), 15 deletions(-)

diff --git a/libcxx/test/libcxx-03/transitive_includes/to_csv.py b/libcxx/test/libcxx-03/transitive_includes/to_csv.py
index 3035ff6cfe5c..b98bb5aa699d 100755
--- a/libcxx/test/libcxx-03/transitive_includes/to_csv.py
+++ b/libcxx/test/libcxx-03/transitive_includes/to_csv.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 # ===----------------------------------------------------------------------===##
 #
 # Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
diff --git a/libcxx/test/libcxx/transitive_includes/to_csv.py b/libcxx/test/libcxx/transitive_includes/to_csv.py
index 3035ff6cfe5c..b98bb5aa699d 100755
--- a/libcxx/test/libcxx/transitive_includes/to_csv.py
+++ b/libcxx/test/libcxx/transitive_includes/to_csv.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 # ===----------------------------------------------------------------------===##
 #
 # Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
diff --git a/libcxx/utils/ci/lnt/commit-watch b/libcxx/utils/ci/lnt/commit-watch
index 19aa76cb191f..6aec4712d403 100755
--- a/libcxx/utils/ci/lnt/commit-watch
+++ b/libcxx/utils/ci/lnt/commit-watch
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 # ===----------------------------------------------------------------------===##
 #
 # Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
diff --git a/libcxx/utils/ci/lnt/run-benchmarks b/libcxx/utils/ci/lnt/run-benchmarks
index 256871b6a857..bd6896fe30cb 100755
--- a/libcxx/utils/ci/lnt/run-benchmarks
+++ b/libcxx/utils/ci/lnt/run-benchmarks
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 # ===----------------------------------------------------------------------===##
 #
 # Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
diff --git a/libcxx/utils/generate_abi_list.py b/libcxx/utils/generate_abi_list.py
index 94e49dca60af..5e99b14bec72 100755
--- a/libcxx/utils/generate_abi_list.py
+++ b/libcxx/utils/generate_abi_list.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 # ===----------------------------------------------------------------------===##
 #
 # Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
diff --git a/libcxx/utils/generate_escaped_output_table.py b/libcxx/utils/generate_escaped_output_table.py
index 59dd707ae612..6be7d128ed5f 100755
--- a/libcxx/utils/generate_escaped_output_table.py
+++ b/libcxx/utils/generate_escaped_output_table.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 # ===----------------------------------------------------------------------===##
 #
 # Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
diff --git a/libcxx/utils/generate_extended_grapheme_cluster_table.py b/libcxx/utils/generate_extended_grapheme_cluster_table.py
index c64a5a00c4c1..83b86fa9c130 100755
--- a/libcxx/utils/generate_extended_grapheme_cluster_table.py
+++ b/libcxx/utils/generate_extended_grapheme_cluster_table.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 # ===----------------------------------------------------------------------===##
 #
 # Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
diff --git a/libcxx/utils/generate_extended_grapheme_cluster_test.py b/libcxx/utils/generate_extended_grapheme_cluster_test.py
index e0a6003ecd53..29a3e14014e8 100755
--- a/libcxx/utils/generate_extended_grapheme_cluster_test.py
+++ b/libcxx/utils/generate_extended_grapheme_cluster_test.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 # ===----------------------------------------------------------------------===##
 #
 # Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
diff --git a/libcxx/utils/generate_feature_test_macro_components.py b/libcxx/utils/generate_feature_test_macro_components.py
index 9d2e095ab9ff..13f40c7caa30 100644
--- a/libcxx/utils/generate_feature_test_macro_components.py
+++ b/libcxx/utils/generate_feature_test_macro_components.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 import os
 from builtins import range
diff --git a/libcxx/utils/generate_indic_conjunct_break_table.py b/libcxx/utils/generate_indic_conjunct_break_table.py
index 774a51084917..7d01dc390968 100755
--- a/libcxx/utils/generate_indic_conjunct_break_table.py
+++ b/libcxx/utils/generate_indic_conjunct_break_table.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 # ===----------------------------------------------------------------------===##
 #
 # Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
diff --git a/libcxx/utils/generate_iwyu_mapping.py b/libcxx/utils/generate_iwyu_mapping.py
index ab3e3f14e14d..35da70f62f26 100644
--- a/libcxx/utils/generate_iwyu_mapping.py
+++ b/libcxx/utils/generate_iwyu_mapping.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 import argparse
 import libcxx.header_information
diff --git a/libcxx/utils/generate_width_estimation_table.py b/libcxx/utils/generate_width_estimation_table.py
index 618612c61374..720a704ffba9 100644
--- a/libcxx/utils/generate_width_estimation_table.py
+++ b/libcxx/utils/generate_width_estimation_table.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 # ===----------------------------------------------------------------------===##
 #
 # Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
diff --git a/libcxx/utils/run.py b/libcxx/utils/run.py
index 6b4d615444bc..b97e1edf05a9 100755
--- a/libcxx/utils/run.py
+++ b/libcxx/utils/run.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 # ===----------------------------------------------------------------------===##
 #
 # Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
diff --git a/libcxx/utils/ssh.py b/libcxx/utils/ssh.py
index 77e79ce3d71f..65041757e54a 100755
--- a/libcxx/utils/ssh.py
+++ b/libcxx/utils/ssh.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 # ===----------------------------------------------------------------------===##
 #
 # Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
diff --git a/libcxx/utils/sym_diff.py b/libcxx/utils/sym_diff.py
index 8d2ff14c6542..c371c0b697b2 100755
--- a/libcxx/utils/sym_diff.py
+++ b/libcxx/utils/sym_diff.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 # ===----------------------------------------------------------------------===##
 #
 # Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.