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Fix annoying DeprecationWarning in constructor.py #220

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Fix annoying DeprecationWarning in constructor.py #220

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4 changes: 2 additions & 2 deletions lib3/yaml/constructor.py
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Original file line number Diff line number Diff line change
Expand Up @@ -5,7 +5,7 @@
from .error import *
from .nodes import *

import collections, datetime, base64, binascii, re, sys, types
import collections.abc, datetime, base64, binascii, re, sys, types

class ConstructorError(MarkedYAMLError):
pass
Expand Down Expand Up @@ -123,7 +123,7 @@ def construct_mapping(self, node, deep=False):
mapping = {}
for key_node, value_node in node.value:
key = self.construct_object(key_node, deep=deep)
if not isinstance(key, collections.Hashable):
if not isinstance(key, collections.abc.Hashable):
raise ConstructorError("while constructing a mapping", node.start_mark,
"found unhashable key", key_node.start_mark)
value = self.construct_object(value_node, deep=deep)
Expand Down