support version 0.12.0 of configargparse

fixes #4648 (cherry picked from commit 115b215)
certbot · May 13, 2017 · de1dbb7 · de1dbb7
1 parent 4be7efb
commit de1dbb7
Showing 1 changed file with 6 additions and 1 deletion.
diff --git a/certbot/util.py b/certbot/util.py
@@ -476,7 +476,12 @@ def __call__(self, unused1, unused2, unused3, option_string=None):
             sys.stderr.write(
                 "Use of {0} is deprecated.\n".format(option_string))
 
-    configargparse.ACTION_TYPES_THAT_DONT_NEED_A_VALUE.add(ShowWarning)
+    # In version 0.12.0 ACTION_TYPES_THAT_DONT_NEED_A_VALUE was changed from a set
+    # to a tuple.
+    if isinstance(configargparse.ACTION_TYPES_THAT_DONT_NEED_A_VALUE, set):
+        configargparse.ACTION_TYPES_THAT_DONT_NEED_A_VALUE.add(ShowWarning)
+    else:
+        configargparse.ACTION_TYPES_THAT_DONT_NEED_A_VALUE += (ShowWarning,)
     add_argument(argument_name, action=ShowWarning,
                  help=argparse.SUPPRESS, nargs=nargs)