Add --version flag to display installed version

Author: StasonJatham

CHANGELOG.md

@@ -5,6 +5,11 @@ All notable changes to PyResolvers will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [2.4.1] - 2025-01-11
+
+### Added
+- Added `--version` and `-V` flags to display installed version
+
 ## [2.4.0] - 2025-01-11
 
 ### Changed

pyresolvers/lib/core/__version__.py

@@ -1,2 +1,2 @@
-__version__ = '2.4.0'
+__version__ = '2.4.1'
 

pyresolvers/lib/core/input.py

@@ -171,6 +171,8 @@ def parse(self, argv):
     @staticmethod
     def setup_parser():
         """Setup argument parser."""
+        from pyresolvers.lib.core.__version__ import __version__
+
         parser = ArgumentParser(
             prog='pyresolvers',
             description='High-Performance Async DNS Resolver Validator & Speed Tester',
@@ -191,6 +193,12 @@ def setup_parser():
             formatter_class=lambda prog: RawDescriptionHelpFormatter(prog, max_help_position=35, width=100)
         )
 
+        parser.add_argument(
+            '--version', '-V',
+            action='version',
+            version=f'%(prog)s {__version__}'
+        )
+
         # INPUT OPTIONS
         input_group = parser.add_argument_group('Input Options')
         targets = input_group.add_mutually_exclusive_group(required=False)