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Initialize pipeline only once #1705

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Oct 27, 2020
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4 changes: 3 additions & 1 deletion panel/pipeline.py
Original file line number Diff line number Diff line change
Expand Up @@ -614,6 +614,7 @@ def define_graph(self, graph, force=False):
raise ValueError('Graph is not fully traversable from stage: %s.'
% root)

reinit = root is not self._stage
self._stage = root
self._graph = graph
self._route = [root]
Expand All @@ -622,6 +623,7 @@ def define_graph(self, graph, force=False):
Column(self.prev_selector, self.prev_button),
Column(self.next_selector, self.next_button)
]
self.stage[:] = [self._init_stage()]
if reinit:
self.stage[:] = [self._init_stage()]
self._update_progress()
self._update_button()