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-rw-r--r--source/binarytree.py2
1 files changed, 1 insertions, 1 deletions
diff --git a/source/binarytree.py b/source/binarytree.py
index c9747d57..a9294251 100644
--- a/source/binarytree.py
+++ b/source/binarytree.py
@@ -21,7 +21,7 @@ class OrderedBinaryTree(object):
"""
Represents a binary ordered .
"""
- def __init__(self, root):
+ def __init__(self, root=None):
"""
Initializes the root member.
"""
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