Read section 8.10 in the book and do the examples. Let's encapsulate that into a function:
def compare_to_banana(word):
"""Prints a message about how a word compares with "banana"."""
if word < 'banana':
print("Your word, " + word + ", comes before banana.")
elif word > 'banana':
print("Your word, " + word + ", comes after banana.")
else:
print("All right, bananas!")
Test it!
>>> compare_to_banana("Pineapple")
Your word, Pineapple, comes before banana.
If you want to ignore the case of the letters, we can add a line to change that using a string method:
def compare_to_banana(word):
"""Prints a message about how a word compares with "banana"."""
word = word.lower() #converts word to all lower case
if word < 'banana':
print("Your word, " + word + ", comes before banana.")
elif word > 'banana':
print("Your word, " + word + ", comes after banana.")
else:
print("All right, bananas!")
>>> compare_to_banana("Pineapple")
Your word, pineapple, comes after banana.
As always, I highly recommend going over the debugging section, 8.11.