<human>:  Python function to get key of maximum value in Python.
<bot>: Here is a Python function to get the key of maximum value

import re

def get_key_of_max_value(dictionary):
  """
  Get key of maximum value in dictionary.
  """
  return max(dictionary, key=dictionary.get)

# Enter the dictionary
dictionary = {"lilly": 10, "mouse": 20, "airplane": 30}

# Calling the function
print((get_key_of_max_value(dictionary)))

#Example Output
# airplane

#Remember to inspect code for bugs.