Merge pull request #5 from lorendsnow/master

Proposed solution for Chapter 4, Exercise 1

CH_04_design_patterns/exercise_01/__init__.py

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+

CH_04_design_patterns/exercise_01/solution_01.py

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+from collections.abc import Callable
+
+class SortedDict:
+  def __init__(self, _dict: dict, keyfunc: Callable) -> None:
+    self.unsorted = _dict
+    self.keyfunc = keyfunc
+
+    self._dict = self.sort()
+    
+  def sort(self) -> dict:
+    sorted_list = sorted(self.unsorted.items(), key=self.keyfunc)
+    sorted_dict = {k:v for k, v in sorted_list}
+    return sorted_dict
+
+  def __repr__(self):
+    return repr(self._dict)