new_contents: print(", ".join(["spam", "eggs", "ham"]))
  #prints "spam, eggs, ham"
  
  print("Hello ME".replace("ME", "world"))
  #prints "Hello world"
  
  print("This is a sentence.".startswith("This"))
  # prints "True"
  
  print("This is a sentence.".endswith("sentence."))
  # prints "True"
  
  print("This is a sentence.".upper())
  # prints "THIS IS A SENTENCE."
  
  print("AN ALL CAPS SENTENCE".lower())
  #prints "an all caps sentence"
  
  print("spam, eggs, ham".split(", "))
  #prints "['spam', 'eggs', 'ham']"
  
subject: Create important_data_tips.py