updated from Atlas

13-protocol-abc/frenchdeck2.py

@@ -1,8 +1,8 @@
-import collections
+from collections import namedtuple, abc
 
-Card = collections.namedtuple('Card', ['rank', 'suit'])
+Card = namedtuple('Card', ['rank', 'suit'])
 
-class FrenchDeck2(collections.MutableSequence):
+class FrenchDeck2(abc.MutableSequence):
     ranks = [str(n) for n in range(2, 11)] + list('JQKA')
     suits = 'spades diamonds clubs hearts'.split()
 

13-protocol-abc/typing/randompick_test.py

@@ -12,14 +12,14 @@ class SimplePicker:  # <2>
         return self._items.pop()
 
 def test_isinstance() -> None:  # <4>
-    popper = SimplePicker([1])
-    assert isinstance(popper, RandomPicker)
+    popper: RandomPicker = SimplePicker([1])  # <5>
+    assert isinstance(popper, RandomPicker)  # <6>
 
-def test_item_type() -> None:  # <5>
+def test_item_type() -> None:  # <7>
     items = [1, 2]
     popper = SimplePicker(items)
     item = popper.pick()
     assert item in items
     if TYPE_CHECKING:
-        reveal_type(item)  # <6>
+        reveal_type(item)  # <8>
     assert isinstance(item, int)

13-protocol-abc/typing/vector2d_v4.py

@@ -168,5 +168,5 @@ class Vector2d:
 
     @classmethod
     def fromcomplex(cls, datum):
-        return Vector2d(datum.real, datum.imag)  # <1>
+        return cls(datum.real, datum.imag)  # <1>
 # end::VECTOR2D_V4_COMPLEX[]

13-protocol-abc/typing/vector2d_v5.py

@@ -170,5 +170,5 @@ class Vector2d:
     @classmethod
     def fromcomplex(cls, datum: SupportsComplex) -> Vector2d:  # <3>
         c = complex(datum)  # <4>
-        return Vector2d(c.real, c.imag)
+        return cls(c.real, c.imag)
 # end::VECTOR2D_V5_COMPLEX[]