From 55d7a51a5590d8f6c7f05fe072c6cb243e57dd36 Mon Sep 17 00:00:00 2001
From: Timotej Lazar <timotej.lazar@fri.uni-lj.si>
Date: Thu, 25 Jan 2018 20:13:43 +0100
Subject: regex: minor and probably unnecessary tweak

---
 regex/__init__.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/regex/__init__.py b/regex/__init__.py
index 3738251..d120de5 100644
--- a/regex/__init__.py
+++ b/regex/__init__.py
@@ -108,10 +108,10 @@ def make_pattern(tree, selected):
     elif label == 'BinOp' or label == 'Compare':
         # store the operator and left and/or right side
         children = []
-        if subpats[0]:
+        if subpats[0] is not None:
             children += [subpats[0]]
         children += [tree[1]]
-        if subpats[2]:
+        if subpats[2] is not None:
             children += [subpats[2]]
         pat = Tree(label, children)
     else:
-- 
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