App.distro_info(): Accept and return lists

App.distro_info() accepts and returns str instances, interpret
anything passed as fmt parameter which is not a str as iterable, and
return lists of expanded strings in that case.

Signed-off-by: Jan Lindemann <jan@janware.com>

src/python/jw/pkg/App.py

@@ -5,7 +5,7 @@
 
 from __future__ import annotations
 
-from typing import TYPE_CHECKING
+from typing import TYPE_CHECKING, Iterable
 
 if TYPE_CHECKING:
     from typing import TypeAlias
@@ -418,7 +418,12 @@ class App(Base):
             self.__distro = ret
         return self.__distro
 
-    def distro_info(self, fmt: str) -> str:
+    def distro_info(self, fmt: str|Iterable) -> str|Iterable:
+        if not isinstance(fmt, str):
+            ret: list[str] = []
+            for entry in fmt:
+                ret.append(self.distro_info(entry))
+            return ret
         ret = fmt
         for macro in re.findall("%{([A-Za-z_-]+)}", fmt):
             try: