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Handle None as DataFrame.value #1384

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Jun 4, 2020
+12 −1
Merged

Handle None as DataFrame.value #1384

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9 changes: 9 additions & 0 deletions panel/tests/widgets/test_tables.py
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Original file line number Diff line number Diff line change
Expand Up @@ -167,3 +167,12 @@ def test_hierarchical_index(document, comm):
assert isinstance(agg1, MinAggregator)
assert agg2.field_ == 'Float'
assert isinstance(agg2, MinAggregator)


def test_none_table(document, comm):
table = DataFrame(value=None)
assert table.indexes == []

model = table.get_root(document, comm)

assert model.source.data == {}
4 changes: 3 additions & 1 deletion panel/widgets/tables.py
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Expand Up @@ -78,7 +78,9 @@ def _validate(self, event):
@property
def indexes(self):
import pandas as pd
if isinstance(self.value.index, pd.MultiIndex):
if self.value is None:
return []
elif isinstance(self.value.index, pd.MultiIndex):
return list(self.value.index.names)
return [self.value.index.name or 'index']

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