input: Write a python function to parse a JSON string into a Python dictionary.
  assert parse_json('{"name":"John","age":30,"city":"New York"}') == {'name': 'John', 'age': 30, 'city': 'New York'}
  assert parse_json('{"fruit":"apple","size":"large","color":"red"}') == {'fruit': 'apple', 'size': 'large', 'color': 'red'}
  assert parse_json('{"a":1,"b":2,"c":3}') == {'a': 1, 'b': 2, 'c': 3}
output: import json
  
  def parse_json(json_string):
      return json.loads(json_string)