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-rw-r--r--Lib/mhlib.py2
1 files changed, 1 insertions, 1 deletions
diff --git a/Lib/mhlib.py b/Lib/mhlib.py
index feb554efa1..e5900acff9 100644
--- a/Lib/mhlib.py
+++ b/Lib/mhlib.py
@@ -788,7 +788,7 @@ class IntSet:
self.pairs = []
self.sep = sep
self.rng = rng
- if data is not None: self.fromstring(data)
+ if data: self.fromstring(data)
def reset(self):
self.pairs = []