implement config.setdefault

2015-10-07 00:58:43 +02:00
parent c8e0efe1ff
commit bea33ae9cb
2 changed files with 18 additions and 0 deletions
--- a/gallery_dl/config.py
+++ b/gallery_dl/config.py
@@ -68,6 +68,18 @@ def set(keys, value):
            conf = temp
    conf[keys[-1]] = value

+def setdefault(keys, value):
+    """Set the value of property 'key' if it doesn't exist"""
+    conf = _config
+    for k in keys[:-1]:
+        try:
+            conf = conf[k]
+        except KeyError:
+            temp = {}
+            conf[k] = temp
+            conf = temp
+    return conf.setdefault(keys[-1], value)
+

 # --------------------------------------------------------------------
 # internals