<human>:  Can you show me a Python program to create a set default values in dict.
<bot>: = value
  return dictionary

# Enter the dictionary
dictionary = {"key1": "value1", "key2": "value2"}

# Calling the function
dictionary = set_default(dictionary, "key3", "value3")

# Printing the result
print(dictionary)

#Example Output
# {'key1': 'value1', 'key2': 'value2', 'key3': 'value3'}

#Remember to inspect code for bugs.