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transforms/lower_units: support empty list

This commit is contained in:
Sebastien Bourdeauducq 2014-12-19 14:40:20 +08:00
parent 5522378c1c
commit a9b28dff36
1 changed files with 5 additions and 4 deletions
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9
artiq/transforms/lower_units.py
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@ -89,10 +89,11 @@ class _UnitsLowerer(ast.NodeTransformer):
def visit_List(self, node):
self.generic_visit(node)
us = [getattr(elt, "unit", None) for elt in node.elts]
if not all(u == us[0] for u in us[1:]):
raise units.DimensionError
node.unit = us[0]
if node.elts:
us = [getattr(elt, "unit", None) for elt in node.elts]
if not all(u == us[0] for u in us[1:]):
raise units.DimensionError
node.unit = us[0]
return node
def visit_ListComp(self, node):