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diff --git a/HDL_workflow.mdwn b/HDL_workflow.mdwn
index cbce07e78f905349944c1a1c749f5c06d68d633c..1d36b9f503f111f14a16b83580eb251171e0b4f4 100644 (file)
--- a/HDL_workflow.mdwn
+++ b/HDL_workflow.mdwn
@@ -940,6 +940,13 @@ identification of context and an aid to rapid understanding.
 Anything that interferes with that - such as python format-strings -
 has to take a back seat, regardless of its perceived benefits.
 
+**If you absolutely must** use python-format-strings, **only** do
+so by restricting to variables.  Create temporary variables if you
+have to.
+
+    y = '/'.join(a_list)
+    x = f"{y}"
+
 ### PEP8 format
 
 * all code needs to conform to pep8.  use either pep8checker or better