How to use the singledispatch._find_impl function in singledispatch
To help you get started, we’ve selected a few singledispatch examples, based on popular ways it is used in public projects.
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ambv / singledispatch / test_singledispatch.py View on Github 
self.assertEqual(td.set_ops, [dict, list])
g.register(list, lambda arg: "list")
self.assertEqual(td.get_ops, [list, dict])
self.assertEqual(len(td), 0)
self.assertEqual(g(d), "base")
self.assertEqual(len(td), 1)
self.assertEqual(td.get_ops, [list, dict])
self.assertEqual(td.set_ops, [dict, list, dict])
self.assertEqual(td.data[dict],
functools._find_impl(dict, g.registry))
self.assertEqual(g(l), "list")
self.assertEqual(len(td), 2)
self.assertEqual(td.get_ops, [list, dict])
self.assertEqual(td.set_ops, [dict, list, dict, list])
self.assertEqual(td.data[list],
functools._find_impl(list, g.registry))
class X:
pass
c.MutableMapping.register(X) # Will not invalidate the cache,
# not using ABCs yet.
self.assertEqual(g(d), "base")
self.assertEqual(g(l), "list")
self.assertEqual(td.get_ops, [list, dict, dict, list])
self.assertEqual(td.set_ops, [dict, list, dict, list])
g.register(c.Sized, lambda arg: "sized")
self.assertEqual(len(td), 0)
self.assertEqual(g(d), "sized")
self.assertEqual(len(td), 1)
self.assertEqual(td.get_ops, [list, dict, dict, list])
self.assertEqual(td.set_ops, [dict, list, dict, list, dict])
self.assertEqual(g(l), "list")
self.assertEqual(len(td), 2)self.assertEqual(td.data[dict], g.registry[object])
self.assertEqual(td.data[list], g.registry[object])
self.assertEqual(td.data[dict], td.data[list])
self.assertEqual(g(l), "base")
self.assertEqual(g(d), "base")
self.assertEqual(td.get_ops, [list, dict])
self.assertEqual(td.set_ops, [dict, list])
g.register(list, lambda arg: "list")
self.assertEqual(td.get_ops, [list, dict])
self.assertEqual(len(td), 0)
self.assertEqual(g(d), "base")
self.assertEqual(len(td), 1)
self.assertEqual(td.get_ops, [list, dict])
self.assertEqual(td.set_ops, [dict, list, dict])
self.assertEqual(td.data[dict],
functools._find_impl(dict, g.registry))
self.assertEqual(g(l), "list")
self.assertEqual(len(td), 2)
self.assertEqual(td.get_ops, [list, dict])
self.assertEqual(td.set_ops, [dict, list, dict, list])
self.assertEqual(td.data[list],
functools._find_impl(list, g.registry))
class X:
pass
c.MutableMapping.register(X) # Will not invalidate the cache,
# not using ABCs yet.
self.assertEqual(g(d), "base")
self.assertEqual(g(l), "list")
self.assertEqual(td.get_ops, [list, dict, dict, list])
self.assertEqual(td.set_ops, [dict, list, dict, list])
g.register(c.Sized, lambda arg: "sized")
self.assertEqual(len(td), 0)singledispatch
Backport functools.singledispatch to older Pythons.
