Implement --version flag

PFERD/__main__.py

@@ -6,8 +6,14 @@ from pathlib import Path
 from .config import Config, ConfigDumpException, ConfigLoadException
 from .output_dir import OnConflict, Redownload
 from .pferd import Pferd
+from .version import NAME, VERSION
 
 GENERAL_PARSER = argparse.ArgumentParser(add_help=False)
+GENERAL_PARSER.add_argument(
+    "--version",
+    action="store_true",
+    help="print version and exit"
+)
 GENERAL_PARSER.add_argument(
     "--config", "-c",
     type=Path,
@@ -211,6 +217,10 @@ def prune_crawlers(
 def main() -> None:
     args = PARSER.parse_args()
 
+    if args.version:
+        print(f"{NAME} {VERSION}")
+        exit()
+
     try:
         config = Config(load_parser(args))
     except ConfigLoadException:

PFERD/crawler.py

@@ -14,7 +14,7 @@ from .limiter import Limiter
 from .logging import ProgressBar, log
 from .output_dir import FileSink, OnConflict, OutputDirectory, Redownload
 from .transformer import Transformer
-from .version import __version__
+from .version import NAME, VERSION
 
 
 class CrawlWarning(Exception):
@@ -275,7 +275,7 @@ class HttpCrawler(Crawler):
             pass
 
         async with aiohttp.ClientSession(
-                headers={"User-Agent": f"pferd/{__version__}"},
+                headers={"User-Agent": f"{NAME}/{VERSION}"},
                 cookie_jar=cookie_jar,
         ) as session:
             self.session = session

PFERD/version.py

@@ -1 +1,2 @@
-__version__ = "3.0.0"
+NAME = "PFERD"
+VERSION = "3.0.0"

setup.cfg

@@ -1,6 +1,6 @@
 [metadata]
 name = PFERD
-version = attr: PFERD.version.__version__
+version = attr: PFERD.version.VERSION
 
 [options]
 packages = PFERD