Join() and format() issue

Question

Alright, let's finish making our menu. Combine the sundaes list into a new variable named displaymenu, where each item in the list is rejoined together by a comma and a space (", ").
Then reassign the menu variable to use the existing variable and .format() to replace the placeholder with the new string in displaymenu.
If you're really brave, you can even accomplish this all on the same line where menu is currently being set.
banana.py
available = "banana split;hot fudge;cherry;malted;black and white"
sundaes = available.split(";")
display_menu = sundaes.join(", ")
menu = "Our available flavors are: {}.".format(display_menu)

Alexander Davison · Accepted Answer

Wow, you are sooo close that you will laugh or cry when you see the mistake :joy:
:point_right: Python has .join() used differently then other languages.
 Instead of:
:x:
python
a = [1, 2, 3]
print(a.join(', '))

You need to write:
:whitecheckmark:
python
a = [1, 2, 3]
print(', '.join(a))

You see the difference?
Let's look even closer:
python
a.join(', ')  # Incorrect
', '.join(a)  # Correct

Now, let's go back to your own code. Do you see what's wrong with this?
python
display_menu = sundaes.join(", ")

I hope this helps. :grin:
:dizzy: ~Alex :dizzy:

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Subramanian K

Subramanian K

Join() and format() issue

1 Answer

Alexander Davison

Alexander Davison

Wow, you are sooo close that you will laugh or cry when you see the mistake

Subramanian K

Subramanian K

Alexander Davison

Alexander Davison