DOC added documentation for a function in yaml API

src/caosdb/yamlapi.py

@@ -73,6 +73,11 @@ def dict_to_xml(d):
 
 
 def yaml_to_xml(yamlstr):
+    """
+    yamlstr: The string to load the yaml document from.
+    Loads a yaml document from yamlstr and converts
+    it to XML.
+    """
     return dict_to_xml(yaml.load(yamlstr))