Switch to raise the error

Signed-off-by: Dimitris Zlatanidis <d.zlatanidis@gmail.com>

slpkg/main.py

@@ -688,8 +688,7 @@ class ArgParse(BlackList):
                 self.args.remove(arg)
                 break
         if tag and tag not in colors:
-            print(f"\nslpkg: Error: Available colors {colors}\n")
-            raise SystemExit(1)
+            raise SystemExit(f"\nslpkg: Error: Available colors {colors}\n")
         if (len(self.args) == 3 and self.args[0] in options and
                 self.args[1] in self.meta.repositories and tag in colors):
             PkgDesc(self.args[2], self.args[1], tag).view()
@@ -788,9 +787,8 @@ class ArgParse(BlackList):
         try:
             from dialog import Dialog
         except ImportError:
-            print("Require 'pythondialog': Install with 'slpkg -s sbo "
-                  "python3-pythondialog'")
-            raise SystemExit(1)
+            raise SystemExit("Require 'pythondialog': Install with 'slpkg "
+                             "-s sbo python3-pythondialog'")
 
 
 def main():

slpkg/sbo/check.py

@@ -62,4 +62,4 @@ def sbo_list():
     """
     for pkg in os.listdir(_meta_.pkg_path):
         if pkg.endswith("_SBo"):
-            yield pkg
+            yield pkg