From a4b9c86db548b2d0dbb5af7a6bbdc26ab47e1eec Mon Sep 17 00:00:00 2001
From: Casper da Costa-Luis <tqdm@caspersci.uk.to>
Date: Thu, 12 Apr 2018 02:02:56 +0100
Subject: [PATCH] postfix force non-dict documentation

---
 README.rst | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/README.rst b/README.rst
index 00e9cd81..e9c1df75 100644
--- a/README.rst
+++ b/README.rst
@@ -511,6 +511,14 @@ with the ``desc`` and ``postfix`` arguments:
             t.postfix[1]["value"] = i / 2
             t.update()
 
+Points to remember when using ``{postfix[...]}`` in the ``bar_format`` string:
+
+- ``postfix`` also needs to be passed as an initial argument in a compatible
+  format, and
+- ``postfix`` will be auto-converted to a string if it is a ``dict``-like
+  object. To prevent this behaviour, insert an extra item into the dictionary
+  where the key is not a string.
+
 Nested progress bars
 ~~~~~~~~~~~~~~~~~~~~