input: Write a python function to split a text string by commas and spaces.
  assert split_text("Apples, oranges, and bananas") == ["Apples", "oranges", "and bananas"]
  assert split_text("Hello, world, this, is, a, test") == ["Hello", "world", "this", "is", "a", "test"]
  assert split_text("One, two, three") == ["One", "two", "three"]
output: def split_text(text):
      return text.split(', ')