From c3272f7776ddd7bd452ac23a8f4ba2f9f70b2f97 Mon Sep 17 00:00:00 2001
From: Joseph Weston <joseph@weston.cloud>
Date: Wed, 21 Aug 2019 12:20:15 +0200
Subject: [PATCH] deprecate not specfiying 'norbs' when creating site families
---
kwant/builder.py | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/kwant/builder.py b/kwant/builder.py
index 89ec7c24..b31edc6b 100644
--- a/kwant/builder.py
+++ b/kwant/builder.py
@@ -140,6 +140,10 @@ class SiteFamily(metaclass=abc.ABCMeta):
self.canonical_repr = canonical_repr
self.hash = hash(canonical_repr)
self.name = name
+ if norbs is None:
+ warnings.warn("Not specfying norbs is deprecated. Always specify "
+ "norbs when creating site families.",
+ KwantDeprecationWarning, stacklevel=3)
if norbs is not None:
if int(norbs) != norbs or norbs <= 0:
raise ValueError('The norbs parameter must be an integer > 0.')
--
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