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Diffstat (limited to 'python/vyos/configtree.py')
| -rw-r--r-- | python/vyos/configtree.py | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/python/vyos/configtree.py b/python/vyos/configtree.py index f5e697137..5ba829a4c 100644 --- a/python/vyos/configtree.py +++ b/python/vyos/configtree.py @@ -305,6 +305,10 @@ class ConfigTree(object): class DiffTree: def __init__(self, left, right, path=[], libpath=LIBPATH): + if left is None: + left = ConfigTree(config_string='\n') + if right is None: + right = ConfigTree(config_string='\n') if not (isinstance(left, ConfigTree) and isinstance(right, ConfigTree)): raise TypeError("Arguments must be instances of ConfigTree") if path: |