Test the Union Operator on dictionaries

test/example-uniondict-normalization/.meta/config.json

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+{
+  "authors": [
+    "brocla"
+  ],
+  "files": {
+    "solution": [
+      "example_uniondict_normalization.py"
+    ]
+  }
+}

test/example-uniondict-normalization/example_uniondict_normalization.py

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+""" Examples adapted from Mecha Munch Management, Alphametrics, and ChatGPT
+
+    ChatGPT Prompt: Write a python function that
+       reads user settings from a toml file and
+       merges them with a dictionary of default
+       settings to create a single dictionary.
+       If there are any conflicts between the
+       two sources of settings, the data from
+       the toml file should be used.
+"""
+
+
+def update_recipes_tuple(ideas, recipe_updates):
+    """Mecha Munch Management Example.
+
+    Update the recipe ideas dictionary.
+    :param ideas: dict - The "recipe ideas" dict.
+    :param recipe_updates: tuple - tuple with updates for the ideas section.
+    :return: dict - updated "recipe ideas" dict.
+    """
+
+     # recipe_updates here is a tuple.
+     # Since this action updates the dict in place, 
+     # the dict then needs to be returned separately, otherwise it is a syntax error. 
+    ideas |= recipe_updates
+    return ideas
+
+
+def update_recipes_dict(ideas, recipe_updates):
+    """Second Mecha Munch Management Example.
+
+    Update the recipe ideas dictionary.
+    :param ideas: dict - The "recipe ideas" dict.
+    :param recipe_updates: dict - dictionary with updates for the ideas section.
+    :return: dict - updated "recipe ideas" dict.
+    """
+
+     # Since this action returns a *new* dict, it can go directly on the return line.
+    return dict(ideas) | dict(recipe_updates)
+
+##Example Usage##
+ideas  = {'Banana Bread' : {'Banana': 1, 'Apple': 1, 'Walnuts': 1, 'Flour': 1, 'Eggs': 2, 'Butter': 1}}
+
+recipe_updates_tuple= (('Banana Bread', {'Banana': 4,  'Walnuts': 2, 'Flour': 1, 'Eggs': 2, 'Butter': 1, 'Milk': 2, 'Eggs': 3}),)
+
+recipe_update_dict= {'Banana Bread': {'Banana': 4,  'Walnuts': 2, 'Flour': 1, 'Eggs': 2, 'Butter': 1, 'Milk': 2, 'Eggs': 3}}
+
+update_recipes_tuple(ideas, recipe_updates_tuple)
+   # {'Banana Bread': {'Banana': 4, 'Walnuts': 2, 'Flour': 1, 'Eggs': 3, 'Butter': 1, 'Milk': 2}}
+
+update_recipes_dict(ideas, recipe_update_dict)
+   # {'Banana Bread': {'Banana': 4, 'Walnuts': 2, 'Flour': 1, 'Eggs': 3, 'Butter': 1, 'Milk': 2}}
+
+
+def assign(letters, selections, lefty, righty):
+    """ Example from `alphametrics` exercise """
+
+    while letters:
+        new_selections = []
+
+        for selection in selections:
+            slc, choices = selection
+
+            if letters[0] in [lefty, righty]:
+                curr_choices = choices - set([0])
+
+            else:
+                curr_choices = choices
+
+            for item in curr_choices:
+                actual = slc | {letters[0]: item}  # combine two dictionaries
+                new_selections.append((actual, choices - set([item])))
+
+        selections = new_selections
+        letters = letters[1:]
+    return [slc for slc, _ in selections]
+
+
+import tomlib
+
+def merge_settings(default_settings, toml_file_path):
+    # Load settings from TOML file
+    with open(toml_file_path, 'r') as f:
+        toml_settings = tomlib.load(f)
+
+    # Merge default settings with settings from TOML file
+    merged_settings = dict(default_settings) | dict(toml_settings)
+
+    return merged_settings
+
+# Example usage:
+default_settings = {
+    'timeout': 30,
+    'retry_count': 3,
+    'log_level': 'INFO'
+}
+toml_file_path = 'settings.toml'  # Path to the TOML file
+
+final_settings = merge_settings(default_settings, toml_file_path)
+print("Final Settings:", final_settings)

test/example-uniondict-normalization/mapping.json

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+{
+    "placeholder_0": "update_recipes_tuple",
+    "placeholder_1": "ideas",
+    "placeholder_2": "recipe_updates",
+    "placeholder_3": "update_recipes_dict",
+    "placeholder_4": "recipe_updates_tuple",
+    "placeholder_5": "recipe_update_dict",
+    "placeholder_6": "assign",
+    "placeholder_7": "letters",
+    "placeholder_8": "selections",
+    "placeholder_9": "lefty",
+    "placeholder_10": "righty",
+    "placeholder_11": "new_selections",
+    "placeholder_12": "selection",
+    "placeholder_13": "slc",
+    "placeholder_14": "choices",
+    "placeholder_15": "curr_choices",
+    "placeholder_16": "item",
+    "placeholder_17": "actual",
+    "placeholder_18": "_",
+    "placeholder_19": "merge_settings",
+    "placeholder_20": "default_settings",
+    "placeholder_21": "toml_file_path",
+    "placeholder_22": "f",
+    "placeholder_23": "toml_settings",
+    "placeholder_24": "merged_settings",
+    "placeholder_25": "final_settings"
+}

test/example-uniondict-normalization/representation.json

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+{
+    "version": 2
+}