Make command required

commitizen/cli.py

@@ -6,7 +6,7 @@
 from decli import cli
 
 from commitizen import commands, config, out
-from commitizen.__version__ import __version__
+
 
 logger = logging.getLogger(__name__)
 data = {
@@ -28,6 +28,8 @@
     ],
     "subcommands": {
         "title": "commands",
+        # TODO: Add this constraint back in 2.0
+        # "required": True,
         "commands": [
             {
                 "name": "ls",
@@ -99,6 +101,11 @@
                     },
                 ],
             },
+            {
+                "name": ["version"],
+                "help": "get the version of the installed commitizen",
+                "func": commands.Version,
+            },
         ],
     },
 }
@@ -113,20 +120,31 @@ def main():
         parser.print_help(sys.stderr)
         raise SystemExit()
 
-    args = parser.parse_args()
+    try:
+        args = parser.parse_args()
+    except TypeError:
+        out.error("Command is required")
+        raise SystemExit()
 
     if args.name:
         conf.update({"name": args.name})
 
+    if args.version:
+        warnings.warn(
+            "'cz --version' will be deprecated in next major version. "
+            "Please use 'cz version' command from your scripts"
+        )
+        logging.getLogger("commitizen").setLevel(logging.DEBUG)
+
     if args.debug:
         warnings.warn(
             "Debug will be deprecated in next major version. "
             "Please remove it from your scripts"
         )
         logging.getLogger("commitizen").setLevel(logging.DEBUG)
 
-    if args.version:
-        out.line(__version__)
-        raise SystemExit()
-
-    args.func(conf, vars(args))()
+    # TODO: This try block can be removed after command is required in 2.0
+    try:
+        args.func(conf, vars(args))()
+    except AttributeError:
+        out.error("Command is required")

commitizen/commands/__init__.py

@@ -4,5 +4,6 @@
 from .info import Info
 from .list_cz import ListCz
 from .schema import Schema
+from .version import Version
 
-__all__ = ("Bump", "Commit", "Example", "Info", "ListCz", "Schema")
+__all__ = ("Bump", "Commit", "Example", "Info", "ListCz", "Schema", "Version")

commitizen/commands/version.py

@@ -0,0 +1,12 @@
+from commitizen import out
+from commitizen.__version__ import __version__
+
+
+class Version:
+    """Get the version of the installed commitizen."""
+
+    def __init__(self, config: dict, *args):
+        self.config: dict = config
+
+    def __call__(self):
+        out.write(__version__)

tests/test_commands.py

@@ -134,3 +134,10 @@ def test_list_cz():
 
         commands.ListCz(config)()
         mocked_write.assert_called_once()
+
+
+def test_version():
+    with mock.patch("commitizen.out.write") as mocked_write:
+
+        commands.Version(config)()
+        mocked_write.assert_called_once()