Switch to collections.abc.*

The abstract base classes previously defined in 'collections' were moved
to 'collections.abc' in 3.3. The aliases will be removed in 3.10.
Preempt this change now with a simple find-replace:

  $ ag -l 'collections.($TYPES)' | \
      xargs sed -i 's/\(collections\)\.\($TYPES\)/\1.abc.\2/g'

Where $TYPES is the list of moved ABCs from [1].

[1] https://docs.python.org/3/library/collections.abc.html

Signed-off-by: Stephen Finucane <stephenfin@redhat.com>
Change-Id: Ib07d778a01275d7c985e059156e95abc112e81c8

yaql/language/utils.py

@@ -32,35 +32,35 @@ NO_VALUE = create_marker('<NoValue>')
 
 
 def is_iterator(obj):
-    return isinstance(obj, collections.Iterator)
+    return isinstance(obj, collections.abc.Iterator)
 
 
 def is_iterable(obj):
     return (
-        isinstance(obj, collections.Iterable) and
+        isinstance(obj, collections.abc.Iterable) and
         not isinstance(obj, (str, MappingType))
     )
 
 
 def is_sequence(obj):
-    return isinstance(obj, collections.Sequence) and not isinstance(
+    return isinstance(obj, collections.abc.Sequence) and not isinstance(
         obj, str)
 
 
 def is_mutable(obj):
-    return isinstance(obj, (collections.MutableSequence,
-                            collections.MutableSet,
-                            collections.MutableMapping))
+    return isinstance(obj, (collections.abc.MutableSequence,
+                            collections.abc.MutableSet,
+                            collections.abc.MutableMapping))
 
 
-SequenceType = collections.Sequence
-MutableSequenceType = collections.MutableSequence
-SetType = collections.Set
-MutableSetType = collections.MutableSet
-MappingType = collections.Mapping
-MutableMappingType = collections.MutableMapping
-IterableType = collections.Iterable
-IteratorType = collections.Iterator
+SequenceType = collections.abc.Sequence
+MutableSequenceType = collections.abc.MutableSequence
+SetType = collections.abc.Set
+MutableSetType = collections.abc.MutableSet
+MappingType = collections.abc.Mapping
+MutableMappingType = collections.abc.MutableMapping
+IterableType = collections.abc.Iterable
+IteratorType = collections.abc.Iterator
 QueueType = collections.deque
 
 
@@ -85,7 +85,7 @@ def convert_input_data(obj, rec=None):
 def convert_output_data(obj, limit_func, engine, rec=None):
     if rec is None:
         rec = convert_output_data
-    if isinstance(obj, collections.Mapping):
+    if isinstance(obj, collections.abc.Mapping):
         result = {}
         for key, value in limit_func(obj.items()):
             result[rec(key, limit_func, engine, rec)] = rec(
@@ -119,7 +119,7 @@ class MappingRule(object):
         self.destination = destination
 
 
-class FrozenDict(collections.Mapping):
+class FrozenDict(collections.abc.Mapping):
     def __init__(self, *args, **kwargs):
         self._d = dict(*args, **kwargs)
         self._hash = None

yaql/language/yaqltypes.py

@@ -185,7 +185,7 @@ class Iterable(PythonType):
 
     def __init__(self, validators=None, nullable=False):
         super(Iterable, self).__init__(
-            collections.Iterable, nullable,
+            collections.abc.Iterable, nullable,
             [lambda t: not isinstance(t, (str, utils.MappingType))] + (
                 validators or []))
 
@@ -217,7 +217,7 @@ class Sequence(PythonType):
 
     def __init__(self, validators=None, nullable=False):
         super(Sequence, self).__init__(
-            collections.Sequence, nullable, [
+            collections.abc.Sequence, nullable, [
                 lambda t: not isinstance(t, (str, dict))] + (
                     validators or []))
 

yaql/standard_library/queries.py

@@ -883,7 +883,7 @@ class GroupAggregator(object):
             else:
                 if not (
                     len(value_list) == 2 and
-                    isinstance(result, collections.Sequence) and
+                    isinstance(result, collections.abc.Sequence) and
                     not isinstance(result, str) and
                     len(result) == 2 and
                     result[0] == value_list[0]