add options for misc.RandomGen and create dbus classes

IzzyLib/misc.py

@@ -38,14 +38,20 @@ def Boolean(v, return_value=False):
 	return True
 
 
-def RandomGen(length=20, chars=None):
+def RandomGen(length=20, letters=True, digits=True, extra=None):
 	if not isinstance(length, int):
 		raise TypeError(f'Character length must be an integer, not {type(length)}')
 
-	characters = string.ascii_letters + string.digits
+	characters = ''
 
-	if chars:
-		characters += chars
+	if letters:
+		characters += string.ascii_letters
+
+	if digits:
+		characters += string.digits
+
+	if extra:
+		characters += extra
 
 	return ''.join(random.choices(characters, k=length))