In this example, the keys and values in dict1 and dict2 are merged. If dict1 and dict2 contain an identical key, such as "foo" the final dictionary will contain the key/value pair from dict2.

#!/usr/bin/python3
dict1 = {
  "foo": "Hello",
  "bar": "World"
}
dict2 = {
  "foo": "Goodbye",
  "baz": "World"
}

merged_dict = {}

for item in dict1, dict2:
  for key, value in item.items():
    merged_dict[key] = value

print(f"merged_dict = {merged_dict}")

In this example, the merged dict would be this.

{'foo': 'Goodbye', 'bar': 'World', 'baz': 'World'}

In this example, there are two lists that contain a dictionary. The final list will contain the dictionaries from list1 and list2.

#!/usr/bin/python3
list1 = [
  {
  "name": "John Doe",
  "department": "IT"
  },
  {
  "name": "Jane Doe",
  "department": "Sales"
  }
]

list2 = [
  {
  "name": "John Doe",
  "department": "IT"
  },
  {
  "name": "Jane Doe",
  "department": "Human Resources"
  }
]

merged_list = []

for x in list1, list2:
  for item in x:
    merged_list.append(item)

print(f"merged_list = {merged_list}")

In this example, the merged list would be this.

[
  {'name': 'John Doe', 'department': 'IT'},
  {'name': 'Jane Doe', 'department': 'Sales'},
  {'name': 'John Doe', 'department': 'IT'},
  {'name': 'Jane Doe', 'department': 'Human Resources'}
]

You could do something like this to prevent identical keys from being appended to the final list.

#!/usr/bin/python3
list1 = [
  {
  "name": "John Doe",
  "department": "IT"
  },
  {
  "name": "Jane Doe",
  "department": "Sales"
  }
]

list2 = [
  {
  "name": "John Doe",
  "department": "IT"
  },
  {
  "name": "Jane Doe",
  "department": "Human Resources"
  }
]

merged_list = []

for x in list1, list2:
  for item in x:
    if not any(item['name'] in y['name'] for y in merged_list):
      print(f"{item['name']} is NOT in merged_list - appending {item} to merged_list")
      merged_list.append(item)

print(f"merged_list = {merged_list}")