Reformat and redesign the recording output.

mreg_cli/cli.py

@@ -32,7 +32,7 @@ def __init__(
         name: str,
         description: str = "",
         short_desc: str = "",
-        nargs: int = None,
+        nargs: str = "",
         default: Any = None,
         flag_type: Any = None,
         choices: List[str] = None,

mreg_cli/group.py

@@ -406,7 +406,7 @@ def host_list(args: argparse.Namespace) -> None:
 
     manager.add_line("Groups:")
     for group in group_list:
-        manager.add_line("  ", group["name"])
+        manager.add_line(f"  {group['name']}")
 
 
 group.add_command(

mreg_cli/outputmanager.py

@@ -125,10 +125,10 @@ def __new__(cls):
     def clear(self) -> None:
         """Clear the object."""
         self._output: List[str] = []
-        self._filter_re: Any = None  # should be re.Pattern, but python 3.6 doesn't have that
+        self._filter_re: Optional["re.Pattern[str]"] = None
         self._filter_negate: bool = False
-        self._command_executed: str = None
-        self._command_issued: str = None
+        self._command_executed: str = ""
+        self._command_issued: str = ""
 
         self._ok: List[str] = []  # This is typically commands that went OK but returned no content
         self._warnings: List[str] = []

mreg_cli/types.py

@@ -4,8 +4,10 @@
 import sys
 from typing import TYPE_CHECKING, Dict, List, Optional, Union
 
+from typing_extensions import Literal, TypeAlias  # noqa: F401
+
 if sys.version_info >= (3, 8):
-    from typing import Literal, TypedDict
+    from typing import TypedDict
 
     class TimeInfo(TypedDict):
         """Type definition for time-related information in the recording entry."""
@@ -28,15 +30,13 @@ class RecordingEntry(TypedDict):
         api_requests: List[str]
         time: Optional[TimeInfo]
 
-    IP_Version = Literal[4, 6]
-
 else:
     from typing import Any
 
     TimeInfo = Dict[str, Any]
     RecordingEntry = Dict[str, Any]
-    IP_Version = int
 
+IP_Version: "TypeAlias" = "Literal[4, 6]"
 IP_network = Union[ipaddress.IPv4Network, ipaddress.IPv6Network]
 
 if TYPE_CHECKING: