feat: Add -V, --version CLI flag to show version

Issue #186: #186
PR #187: #187
Co-authored-by: Timothée Mazzucotelli <pawamoy@pm.me>

Author: jgarte

src/griffe/c3linear.py

@@ -25,7 +25,7 @@ def head(self) -> T | None:
 
     @property
     def tail(self) -> islice:
-        """Tail od the dependency.
+        """Tail of the dependency.
 
         The `islice` object is sufficient for iteration or testing membership (`in`).
         """

src/griffe/cli.py

@@ -19,6 +19,8 @@
 import os
 import sys
 from datetime import datetime, timezone
+from importlib.metadata import PackageNotFoundError
+from importlib.metadata import version as get_dist_version
 from pathlib import Path
 from typing import IO, TYPE_CHECKING, Any, Callable, Sequence
 
@@ -42,6 +44,13 @@
 logger = get_logger(__name__)
 
 
+def _get_griffe_version() -> str:
+    try:
+        return get_dist_version("griffe")
+    except PackageNotFoundError:
+        return "0.0.0"
+
+
 def _print_data(data: str, output_file: str | IO | None) -> None:
     if isinstance(output_file, str):
         with open(output_file, "w") as fd:
@@ -122,6 +131,7 @@ def get_parser() -> argparse.ArgumentParser:
 
     global_options = parser.add_argument_group(title="Global options")
     global_options.add_argument("-h", "--help", action="help", help=main_help)
+    global_options.add_argument("-V", "--version", action="version", version="%(prog)s " + _get_griffe_version())
 
     def add_common_options(subparser: argparse.ArgumentParser) -> None:
         common_options = subparser.add_argument_group(title="Common options")

src/griffe/mixins.py

@@ -247,7 +247,7 @@ def as_json(self, *, full: bool = False, **kwargs: Any) -> str:
             **kwargs: Additional serialization options passed to encoder.
 
         Returns:
-            A string.
+            A JSON string.
         """
         from griffe.encoders import JSONEncoder  # avoid circular import