move shebangs from python2 to python3

[LocutusOfBorg]

Summary

Since python2 is dead, moving to python3 is the way to move forward, since it fixes e.g. autopkgtests on Debian, and Ubuntu, where python2 is not installed anymore on the system.
This is semi automated patch, made with some sed commands.

[lebedev.ri]

This review seems to be stuck/dead, consider abandoning if no longer relevant.

[LocutusOfBorg]

This is still relevant, python2 is dead.

[RKSimon]

@LocutusOfBorg - a grep of llvm-project *.py files is not finding many matches for python2 - I'm assuming this was handled (e.g. update_cc_test_checks.py was updated in D129590).

There might still be a few missed cases (or references to python2 in comments)?

[LocutusOfBorg]

Updated changes!

llvm-toolchain-snapshot_16~++20230110111828+ded988ed0c00/clang-tools-extra/clang-include-fixer/find-all-symbols/tool/run-find-all-symbols.py

-#!/usr/bin/env python
+#!/usr/bin/env python3
 #
 #=- run-find-all-symbols.py - Parallel find-all-symbols runner -*- python  -*-=#
 #

llvm-toolchain-snapshot_16~++20230110111828+ded988ed0c00/clang-tools-extra/clang-tidy/tool/clang-tidy-diff.py

-#!/usr/bin/env python
+#!/usr/bin/env python3
 #
 #===- clang-tidy-diff.py - ClangTidy Diff Checker -----------*- python -*--===#
 #

llvm-toolchain-snapshot_16~++20230110111828+ded988ed0c00/clang/bindings/python/examples/cindex/cindex-dump.py

-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 #===- cindex-dump.py - cindex/Python Source Dump -------------*- python -*--===#
 #

llvm-toolchain-snapshot_16~++20230110111828+ded988ed0c00/clang/bindings/python/examples/cindex/cindex-includes.py

-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 #===- cindex-includes.py - cindex/Python Inclusion Graph -----*- python -*--===#
 #

llvm-toolchain-snapshot_16~++20230110111828+ded988ed0c00/clang/tools/scan-view/bin/scan-view

-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 from __future__ import print_function
 

llvm-toolchain-snapshot_16~++20230110111828+ded988ed0c00/clang/tools/scan-view/share/startfile.py

-#!/usr/bin/env python
+#!/usr/bin/env python3
 # -*- coding: utf-8 -*-
 
 """Utility for opening a file using the default application in a cross-platform

llvm-toolchain-snapshot_16~++20230110111828+ded988ed0c00/clang/utils/ABITest/ABITestGen.py

-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 from __future__ import absolute_import, division, print_function
 from pprint import pprint

llvm-toolchain-snapshot_16~++20230110111828+ded988ed0c00/clang/utils/CIndex/completion_logger_server.py

-#!/usr/bin/env python
+#!/usr/bin/env python3
 from __future__ import absolute_import, division, print_function
 import sys
 from socket import *

llvm-toolchain-snapshot_16~++20230110111828+ded988ed0c00/clang/utils/CaptureCmd

-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 """CaptureCmd - A generic tool for capturing information about the
 invocations of another program.

llvm-toolchain-snapshot_16~++20230110111828+ded988ed0c00/clang/utils/CmpDriver

-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 """
 A simple utility that compares tool invocations and exit codes issued by

llvm-toolchain-snapshot_16~++20230110111828+ded988ed0c00/clang/utils/FindSpecRefs

-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 import os
 import re

llvm-toolchain-snapshot_16~++20230110111828+ded988ed0c00/clang/utils/FuzzTest

-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 """
 This is a generic fuzz testing tool, see --help for more information.

llvm-toolchain-snapshot_16~++20230110111828+ded988ed0c00/clang/utils/TestUtils/deep-stack.py

-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 from __future__ import absolute_import, division, print_function
 def pcall(f, N):

llvm-toolchain-snapshot_16~++20230110111828+ded988ed0c00/clang/utils/analyzer/CmpRuns.py

-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 """
 CmpRuns - A simple tool for comparing two static analyzer runs to determine

llvm-toolchain-snapshot_16~++20230110111828+ded988ed0c00/clang/utils/analyzer/SATestAdd.py

-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 """
 Static Analyzer qualification infrastructure: adding a new project to

llvm-toolchain-snapshot_16~++20230110111828+ded988ed0c00/clang/utils/analyzer/SATestBuild.py

-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 """
 Static Analyzer qualification infrastructure.

llvm-toolchain-snapshot_16~++20230110111828+ded988ed0c00/clang/utils/analyzer/SATestUpdateDiffs.py

-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 """
 Update reference results for static analyzer.

llvm-toolchain-snapshot_16~++20230110111828+ded988ed0c00/clang/utils/analyzer/SumTimerInfo.py

-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 """
 Script to Summarize statistics in the scan-build output.

llvm-toolchain-snapshot_16~++20230110111828+ded988ed0c00/clang/utils/analyzer/exploded-graph-rewriter.py

-#!/usr/bin/env python
+#!/usr/bin/env python3
 #
 #===- exploded-graph-rewriter.py - ExplodedGraph dump tool -----*- python -*--#
 #

llvm-toolchain-snapshot_16~++20230110111828+ded988ed0c00/clang/utils/check_cfc/check_cfc.py

-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 """Check CFC - Check Compile Flow Consistency
 

llvm-toolchain-snapshot_16~++20230110111828+ded988ed0c00/clang/utils/check_cfc/obj_diff.py

-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 from __future__ import absolute_import, division, print_function
 

llvm-toolchain-snapshot_16~++20230110111828+ded988ed0c00/clang/utils/check_cfc/test_check_cfc.py

-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 """Test internal functions within check_cfc.py."""
 

llvm-toolchain-snapshot_16~++20230110111828+ded988ed0c00/clang/utils/modfuzz.py

-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 # To use:
 #  1) Update the 'decls' list below with your fuzzing configuration.

llvm-toolchain-snapshot_16~++20230110111828+ded988ed0c00/clang/utils/token-delta.py

-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 from __future__ import absolute_import, division, print_function
 import os

llvm-toolchain-snapshot_16~++20230110111828+ded988ed0c00/compiler-rt/lib/asan/scripts/asan_symbolize.py

-#!/usr/bin/env python
+#!/usr/bin/env python3
 #===- lib/asan/scripts/asan_symbolize.py -----------------------------------===#
 #
 # Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.

llvm-toolchain-snapshot_16~++20230110111828+ded988ed0c00/compiler-rt/lib/dfsan/scripts/build-libc-list.py

-#!/usr/bin/env python
+#!/usr/bin/env python3
 #===- lib/dfsan/scripts/build-libc-list.py ---------------------------------===#
 #
 # Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.

llvm-toolchain-snapshot_16~++20230110111828+ded988ed0c00/compiler-rt/lib/fuzzer/scripts/unbalanced_allocs.py

-#!/usr/bin/env python
+#!/usr/bin/env python3
 #===- lib/fuzzer/scripts/unbalanced_allocs.py ------------------------------===#
 #
 # Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.

llvm-toolchain-snapshot_16~++20230110111828+ded988ed0c00/compiler-rt/lib/sanitizer_common/scripts/gen_dynamic_list.py

-#!/usr/bin/env python
+#!/usr/bin/env python3
 #===- lib/sanitizer_common/scripts/gen_dynamic_list.py ---------------------===#
 #
 # Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.

llvm-toolchain-snapshot_16~++20230110111828+ded988ed0c00/compiler-rt/lib/sanitizer_common/scripts/sancov.py

-#!/usr/bin/env python
+#!/usr/bin/env python3
 # Merge or print the coverage data collected by asan's coverage.
 # Input files are sequences of 4-byte integers.
 # We need to merge these integers into a set and then

llvm-toolchain-snapshot_16~++20230110111828+ded988ed0c00/libcxx/utils/cat_files.py

-#!/usr/bin/env python
+#!/usr/bin/env python3
 #===----------------------------------------------------------------------===##
 #
 # Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.

llvm-toolchain-snapshot_16~++20230110111828+ded988ed0c00/libcxx/utils/generate_feature_test_macro_components.py

-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 import os
 from builtins import range

llvm-toolchain-snapshot_16~++20230110111828+ded988ed0c00/libcxx/utils/sym_diff.py

-#!/usr/bin/env python
+#!/usr/bin/env python3
 #===----------------------------------------------------------------------===##
 #
 # Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.

llvm-toolchain-snapshot_16~++20230110111828+ded988ed0c00/lld/utils/benchmark.py

-#!/usr/bin/env python
+#!/usr/bin/env python3
 #
 # Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
 # See https://llvm.org/LICENSE.txt for license information.

llvm-toolchain-snapshot_16~++20230110111828+ded988ed0c00/lldb/examples/python/file_extract.py

-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 import string
 import struct

llvm-toolchain-snapshot_16~++20230110111828+ded988ed0c00/lldb/packages/Python/lldbsuite/test/bench.py

-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 """
 A simple bench runner which delegates to the ./dotest.py test driver to run the

llvm-toolchain-snapshot_16~++20230110111828+ded988ed0c00/lldb/packages/Python/lldbsuite/test/tools/lldb-vscode/vscode.py

-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 import binascii
 import json

llvm-toolchain-snapshot_16~++20230110111828+ded988ed0c00/lldb/scripts/analyze-project-deps.py

-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 import argparse
 import itertools

llvm-toolchain-snapshot_16~++20230110111828+ded988ed0c00/lldb/scripts/verify_api.py

-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 import subprocess
 import optparse

llvm-toolchain-snapshot_16~++20230110111828+ded988ed0c00/lldb/third_party/Python/module/pexpect-4.6/pexpect/FSM.py

-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 '''This module implements a Finite State Machine (FSM). In addition to state
 this FSM also maintains a user defined "memory". So this FSM can be used as a

llvm-toolchain-snapshot_16~++20230110111828+ded988ed0c00/lldb/utils/lui/lui.py

-#!/usr/bin/env python
+#!/usr/bin/env python3
 ##===-- lui.py -----------------------------------------------*- Python -*-===##
 ##
 # Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.

llvm-toolchain-snapshot_16~++20230110111828+ded988ed0c00/lldb/utils/lui/sandbox.py

-#!/usr/bin/env python
+#!/usr/bin/env python3
 ##===-- sandbox.py -------------------------------------------*- Python -*-===##
 ##
 # Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.

llvm-toolchain-snapshot_16~++20230110111828+ded988ed0c00/llvm/examples/Kaleidoscope/MCJIT/cached/genk-timing.py

-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 from __future__ import print_function
 

llvm-toolchain-snapshot_16~++20230110111828+ded988ed0c00/llvm/examples/Kaleidoscope/MCJIT/cached/split-lib.py

-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 from __future__ import print_function
 

llvm-toolchain-snapshot_16~++20230110111828+ded988ed0c00/llvm/examples/Kaleidoscope/MCJIT/complete/genk-timing.py

-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 from __future__ import print_function
 

llvm-toolchain-snapshot_16~++20230110111828+ded988ed0c00/llvm/examples/Kaleidoscope/MCJIT/complete/split-lib.py

-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 from __future__ import print_function
 

llvm-toolchain-snapshot_16~++20230110111828+ded988ed0c00/llvm/examples/Kaleidoscope/MCJIT/lazy/genk-timing.py

-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 from __future__ import print_function
 

llvm-toolchain-snapshot_16~++20230110111828+ded988ed0c00/llvm/test/BugPoint/compile-custom.ll.py

-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 from __future__ import print_function
 

llvm-toolchain-snapshot_16~++20230110111828+ded988ed0c00/llvm/test/Other/opt-bisect-helper.py

-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 from __future__ import print_function
 

llvm-toolchain-snapshot_16~++20230110111828+ded988ed0c00/llvm/test/TableGen/JSON-check.py

-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 import sys
 import subprocess

llvm-toolchain-snapshot_16~++20230110111828+ded988ed0c00/llvm/tools/opt-viewer/opt-diff.py

-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 from __future__ import print_function
 

llvm-toolchain-snapshot_16~++20230110111828+ded988ed0c00/llvm/tools/opt-viewer/opt-stats.py

-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 from __future__ import print_function
 

llvm-toolchain-snapshot_16~++20230110111828+ded988ed0c00/llvm/tools/opt-viewer/opt-viewer.py

-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 from __future__ import print_function
 

llvm-toolchain-snapshot_16~++20230110111828+ded988ed0c00/llvm/tools/opt-viewer/optrecord.py

-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 from __future__ import print_function
 

llvm-toolchain-snapshot_16~++20230110111828+ded988ed0c00/llvm/utils/Misc/zkill

-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 import os
 import re

llvm-toolchain-snapshot_16~++20230110111828+ded988ed0c00/llvm/utils/abtest.py

-#!/usr/bin/env python
+#!/usr/bin/env python3
 #
 # Given a previous good compile narrow down miscompiles.
 # Expects two directories named "before" and "after" each containing a set of

llvm-toolchain-snapshot_16~++20230110111828+ded988ed0c00/llvm/utils/bisect

-#!/usr/bin/env python
+#!/usr/bin/env python3
 #
 # The way you use this is you create a script that takes in as its first
 # argument a count. The script passes into LLVM the count via a command

llvm-toolchain-snapshot_16~++20230110111828+ded988ed0c00/llvm/utils/bisect-skip-count

-#!/usr/bin/env python
+#!/usr/bin/env python3
 # This script is used to bisect skip and count arguments for --debug-counter.
 # It is similar to bisect, except it understands how to increase skip and decrease count
 #

llvm-toolchain-snapshot_16~++20230110111828+ded988ed0c00/llvm/utils/bugpoint_gisel_reducer.py

-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 """Reduces GlobalISel failures.
 

llvm-toolchain-snapshot_16~++20230110111828+ded988ed0c00/llvm/utils/clang-parse-diagnostics-file

-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 import os
 import plistlib

llvm-toolchain-snapshot_16~++20230110111828+ded988ed0c00/llvm/utils/create_ladder_graph.py

-#!/usr/bin/env python
+#!/usr/bin/env python3
 """A ladder graph creation program.
 
 This is a python program that creates c source code that will generate

llvm-toolchain-snapshot_16~++20230110111828+ded988ed0c00/llvm/utils/extract_symbols.py

-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 """A tool for extracting a list of symbols to export
 

llvm-toolchain-snapshot_16~++20230110111828+ded988ed0c00/llvm/utils/extract_vplan.py

-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 # This script extracts the VPlan digraphs from the vectoriser debug messages
 # and saves them in individual dot files (one for each plan). Optionally, and

llvm-toolchain-snapshot_16~++20230110111828+ded988ed0c00/llvm/utils/indirect_calls.py

-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 """A tool for looking for indirect jumps and calls in x86 binaries.
 

llvm-toolchain-snapshot_16~++20230110111828+ded988ed0c00/llvm/utils/lit/lit/ProgressBar.py

-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 # Source: http://code.activestate.com/recipes/475116/, with
 # modifications by Daniel Dunbar.

llvm-toolchain-snapshot_16~++20230110111828+ded988ed0c00/llvm/utils/lit/tests/Inputs/googletest-format/DummySubDir/OneTest.py

-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 import os
 import sys

llvm-toolchain-snapshot_16~++20230110111828+ded988ed0c00/llvm/utils/lit/tests/Inputs/googletest-timeout/DummySubDir/OneTest.py

-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 import os
 import sys

llvm-toolchain-snapshot_16~++20230110111828+ded988ed0c00/llvm/utils/lit/tests/Inputs/shtest-env/print_environment.py

-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 from __future__ import print_function
 import os

llvm-toolchain-snapshot_16~++20230110111828+ded988ed0c00/llvm/utils/lit/tests/Inputs/shtest-format/external_shell/write-bad-encoding.py

-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 import sys
 

llvm-toolchain-snapshot_16~++20230110111828+ded988ed0c00/llvm/utils/lit/tests/Inputs/shtest-shell/check_args.py

-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 import argparse
 import platform

llvm-toolchain-snapshot_16~++20230110111828+ded988ed0c00/llvm/utils/lit/tests/Inputs/shtest-shell/check_path.py

-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 from __future__ import print_function
 

llvm-toolchain-snapshot_16~++20230110111828+ded988ed0c00/llvm/utils/lit/tests/Inputs/shtest-shell/write-to-stderr.py

-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 import sys
 

llvm-toolchain-snapshot_16~++20230110111828+ded988ed0c00/llvm/utils/lit/tests/Inputs/shtest-shell/write-to-stdout-and-stderr.py

-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 import sys
 

llvm-toolchain-snapshot_16~++20230110111828+ded988ed0c00/llvm/utils/llvm-gisel-cov.py

-#!/usr/bin/env python
+#!/usr/bin/env python3
 """
 Summarize the information in the given coverage files.
 

llvm-toolchain-snapshot_16~++20230110111828+ded988ed0c00/llvm/utils/prepare-code-coverage-artifact.py

-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 from __future__ import print_function
 

llvm-toolchain-snapshot_16~++20230110111828+ded988ed0c00/llvm/utils/release/findRegressions-nightly.py

-#!/usr/bin/env python
+#!/usr/bin/env python3
 from __future__ import print_function
 
 import re, string, sys, os, time

llvm-toolchain-snapshot_16~++20230110111828+ded988ed0c00/llvm/utils/release/findRegressions-simple.py

-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 from __future__ import print_function
 import re, string, sys, os, time, math

llvm-toolchain-snapshot_16~++20230110111828+ded988ed0c00/llvm/utils/shuffle_fuzz.py

-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 """A shuffle vector fuzz tester.
 

llvm-toolchain-snapshot_16~++20230110111828+ded988ed0c00/llvm/utils/shuffle_select_fuzz_tester.py

-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 """A shuffle-select vector fuzz tester.
 

llvm-toolchain-snapshot_16~++20230110111828+ded988ed0c00/llvm/utils/sort_includes.py

-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 """Script to sort the top-most block of #include lines.
 

llvm-toolchain-snapshot_16~++20230110111828+ded988ed0c00/llvm/utils/unicode-case-fold.py

-#!/usr/bin/env python
+#!/usr/bin/env python3
 """
 Unicode case folding database conversion utility
 

llvm-toolchain-snapshot_16~++20230110111828+ded988ed0c00/llvm/utils/wciia.py

-#!/usr/bin/env python
+#!/usr/bin/env python3
 """
 wciia - Whose Code Is It Anyway