initial toy commit

tzk.py

@@ -0,0 +1,35 @@
+from abc import ABC, abstractmethod, abstractclassmethod
+import argparse
+
+
+class CliCommand(ABC):
+    @abstractclassmethod
+    def setup_arguments(self, parser):
+        raise NotImplementedError
+
+    @abstractmethod
+    def execute(self, parser):
+        raise NotImplementedError
+
+
+class CommitCommand(CliCommand):
+    cmd = "commit"
+    help = "Do a commit"
+
+    @classmethod
+    def setup_arguments(self, parser):
+        pass
+
+    def execute(self, args):
+        print(f"We have committed!")
+
+
+parser = argparse.ArgumentParser()
+subparsers = parser.add_subparsers()
+for command in CliCommand.__subclasses__():
+    subparser = subparsers.add_parser(command.cmd, help=command.help)
+    subparser.set_defaults(_cls=command)
+    command.setup_arguments(subparser)
+
+args = parser.parse_args()
+args._cls().execute(args)