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+[jinja2: **.html]
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+#!/usr/bin/venv python3
+"""Script for handling translations with Babel"""
+
+import argparse
+import os
+import subprocess
+import tomllib
+
+PROJECT_DIR = os.path.dirname(os.path.abspath(__file__))
+
+# Global variables used by pybabel below
+DOMAIN = "messages"
+COPYRIGHT_HOLDER = "Python Software Foundation"
+LOCALES_DIR = os.path.relpath(os.path.join(PROJECT_DIR, "locales"))
+POT_FILE = os.path.relpath(os.path.join(LOCALES_DIR, f"{DOMAIN}.pot"), PROJECT_DIR)
+SOURCE_DIR = os.path.relpath(
+    os.path.join(PROJECT_DIR, "python_docs_theme"), PROJECT_DIR
+)
+MAPPING_FILE = os.path.relpath(os.path.join(PROJECT_DIR, "babel.cfg"), PROJECT_DIR)
+
+
+def get_project_info() -> dict:
+    """Retrieve project's info to populate the message catalog template"""
+    with open(os.path.join(PROJECT_DIR, "pyproject.toml"), "rb") as f:
+        data = tomllib.load(f)
+    return data["project"]
+
+
+def extract_messages():
+    """Extract messages from all source files into template file"""
+    os.makedirs(LOCALES_DIR, exist_ok=True)
+    project_data = get_project_info()
+    subprocess.run(
+        [
+            "pybabel",
+            "extract",
+            "-F",
+            MAPPING_FILE,
+            "--copyright-holder",
+            COPYRIGHT_HOLDER,
+            "--project",
+            project_data["name"],
+            "--version",
+            project_data["version"],
+            "--msgid-bugs-address",
+            project_data["urls"]["Issue tracker"],
+            "-o",
+            POT_FILE,
+            SOURCE_DIR,
+        ],
+        check=True,
+    )
+
+
+def init_locale(locale: str):
+    """Initialize a new locale based on existing"""
+    cmd = ["pybabel", "init", "-i", POT_FILE, "-d", LOCALES_DIR, "-l", locale]
+    subprocess.run(cmd, check=True)
+
+
+def update_catalogs(locale: str):
+    """Update translations from existing message catalogs"""
+    cmd = ["pybabel", "update", "-i", POT_FILE, "-d", LOCALES_DIR]
+    if locale == "":
+        cmd.append(["-l", locale])
+    subprocess.run(cmd, check=True)
+
+
+def compile_catalogs(locale: str):
+    """Compile existing message catalogs"""
+    cmd = ["pybabel", "compile", "-d", LOCALES_DIR]
+    if locale == "":
+        cmd.append(["-l", locale])
+    subprocess.run(cmd, check=True)
+
+
+def main():
+    parser = argparse.ArgumentParser(description=__doc__)
+    parser.add_argument(
+        "command",
+        choices=["init", "extract", "update", "compile"],
+        help="command to be executed",
+    )
+    parser.add_argument(
+        "-l",
+        "--locale",
+        help="language code (needed for init, optional for update and compile)",
+    )
+
+    args = parser.parse_args()
+    locale = args.locale if args.locale else ""
+
+    os.chdir(PROJECT_DIR)
+
+    if args.command == "extract":
+        extract_messages()
+    elif args.command == "init":
+        if not args.locale:
+            parser.error("init requires passing the --locale option")
+        init_locale(locale)
+    elif args.command == "update":
+        update_catalogs(locale)
+    elif args.command == "compile":
+        compile_catalogs(locale)
+
+
+if __name__ == "__main__":
+    main()