Merge bitcoin/bitcoin#24982: tests: Port `lint-all.sh` to `lint-all.py`

29f44fed36f45cb827c5e593ce52682a942bc296 Converting `lint-all.sh` to `lint-all.py`. (hiago)

Pull request description:

  This PR is converting `test/lint/lint-all.sh` to `test/lint/lint-assertions.py`. It's an item of https://github.com/bitcoin/bitcoin/issues/24783.

ACKs for top commit:
  laanwj:
    Tested ACK 29f44fed36f45cb827c5e593ce52682a942bc296

Tree-SHA512: 5427936aaa8e009613048448cbd79d9225675bdcadcf4fbb70fd091e0aab85e350ef1678da1b388f70d62ca16f40409409f90da3f6bbf057480522cd50fde811

3 files changed, 24 insertions, 31 deletions

diff --git a/test/lint/README.md b/test/lint/README.md
index f4165f908e..1f683c10b3 100644
--- a/test/lint/README.md
+++ b/test/lint/README.md
@@ -39,6 +39,6 @@ To do so, add the upstream repository as remote:
 git remote add --fetch secp256k1 https://github.com/bitcoin-core/secp256k1.git
 ```
 
-lint-all.sh
+lint-all.py
 ===========
 Calls other scripts with the `lint-` prefix.
diff --git a/test/lint/lint-all.py b/test/lint/lint-all.py
new file mode 100755
index 0000000000..c280ba2db2
--- /dev/null
+++ b/test/lint/lint-all.py
@@ -0,0 +1,23 @@
+#!/usr/bin/env python3
+#
+# Copyright (c) 2017-2022 The Bitcoin Core developers
+# Distributed under the MIT software license, see the accompanying
+# file COPYING or http://www.opensource.org/licenses/mit-license.php.
+#
+# This script runs all test/lint/lint-* files, and fails if any exit
+# with a non-zero status code.
+
+from glob import glob
+from pathlib import Path
+from subprocess import run
+
+exit_code = 0
+mod_path = Path(__file__).parent
+for lint in glob(f"{mod_path}/lint-*"):
+    if lint != __file__:
+        result = run([lint])
+        if result.returncode != 0:
+            print(f"^---- failure generated from {lint.split('/')[-1]}")
+            exit_code |= result.returncode
+
+exit(exit_code)
diff --git a/test/lint/lint-all.sh b/test/lint/lint-all.sh
deleted file mode 100755
index fa37fa51c6..0000000000
--- a/test/lint/lint-all.sh
+++ /dev/null
@@ -1,30 +0,0 @@
-#!/usr/bin/env bash
-#
-# Copyright (c) 2017-2019 The Bitcoin Core developers
-# Distributed under the MIT software license, see the accompanying
-# file COPYING or http://www.opensource.org/licenses/mit-license.php.
-#
-# This script runs all contrib/devtools/lint-* files, and fails if any exit
-# with a non-zero status code.
-
-# This script is intentionally locale dependent by not setting "export LC_ALL=C"
-# in order to allow for the executed lint scripts to opt in or opt out of locale
-# dependence themselves.
-
-set -u
-
-SCRIPTDIR=$(dirname "${BASH_SOURCE[0]}")
-LINTALL=$(basename "${BASH_SOURCE[0]}")
-
-EXIT_CODE=0
-
-for f in "${SCRIPTDIR}"/lint-*; do
-  if [ "$(basename "$f")" != "$LINTALL" ]; then
-    if ! "$f"; then
-      echo "^---- failure generated from $f"
-      EXIT_CODE=1
-    fi
-  fi
-done
-
-exit ${EXIT_CODE}