[ports] Split list/tuple value strings based on comma or semicolon (#494)

Author: sea-bass

py_trees/ports_utils.py

@@ -163,15 +163,15 @@ def convert_str_to_type(
 
     if origin is list:
         (inner_type,) = get_args(target_type) or (str,)
-        parts = [p.strip() for p in value.split(",")] if value.strip() else []
+        parts = [p.strip() for p in re.split(r"[,;]", value)] if value.strip() else []
         try:
             return [convert_str_to_type(p, inner_type, logger) for p in parts]
         except Exception:
             return [p.strip() for p in parts]
 
     if origin is tuple:
         inner_types = get_args(target_type)
-        parts = [p.strip() for p in value.split(",")]
+        parts = [p.strip() for p in re.split(r"[,;]", value)]
         converted = []
         for i, p in enumerate(parts):
             t = inner_types[i] if i < len(inner_types) else str