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Allow extra, unhashed objects to be added to the incoming_edge_map

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Davide Depau 2017-12-12 16:45:33 +01:00
parent 6de40d80c5
commit 273cf8f205
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1 changed files with 4 additions and 1 deletions
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ffmpeg/dag.py
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@ -42,6 +42,7 @@ class DagNode(object):
Again, because nodes are immutable, the string representations should remain constant.
"""
def __hash__(self):
"""Return an integer hash of the node."""
raise NotImplementedError()
@ -90,10 +91,12 @@ def get_outgoing_edges(upstream_node, outgoing_edge_map):
class KwargReprNode(DagNode):
"""A DagNode that can be represented as a set of args+kwargs.
"""
@property
def __upstream_hashes(self):
hashes = []
for downstream_label, (upstream_node, upstream_label) in list(self.incoming_edge_map.items()):
# This is needed to allow extra stuff in the incoming_edge_map's value tuples
for downstream_label, (upstream_node, upstream_label) in [(i[0], i[1][:2]) for i in self.incoming_edge_map.items()]:
hashes += [hash(x) for x in [downstream_label, upstream_node, upstream_label]]
return hashes