Add a script to update Python filetype's identifiers list

scripts/update-python-identifiers.sh

+#!/bin/sh
+#
+# Author:  Colomban Wendling <colomban@geany.org>
+# License: GPL v2 or later
+#
+# Updates the `identifiers` entry in data/filetypes.python.
+# Requires both Python 2 and 3.
+
+set -e
+
+file=data/filetypes.python
+
+[ -f "$file" ]
+
+py2_builtins=$(python2 -c 'print("\n".join(dir(__builtins__)))')
+py3_builtins=$(python3 -c 'print("\n".join(dir(__builtins__)))')
+
+# merge Python 2 and 3 keywords but exclude the ones that are already listed primary=
+identifiers=$( (echo "$py2_builtins" && echo "$py3_builtins") | python -c '\
+from sys import stdin; \
+builtins=set(stdin.read().strip().split("\n")); \
+exclude=["False", "None", "True", "exec"]; \
+print(" ".join(sorted([i for i in builtins if i not in exclude])))
+')
+
+sed -e "s/^identifiers=.*$/identifiers=$identifiers/" -i "$file"