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Python

Posted by Mohamed THIAM
Mohamed THIAM
1,091 Points

Can figure out why does my list repeats itself according to the number of items?

shopping_list = list()

print("What should we buy today?")
print("Enter 'DONE' to stop adding items")

while True:
  new_item = input("> ")

  if new_item == "DONE":
    break

  print("Added: List has {} items.".format(len(shopping_list)))
  continue

  shopping_list.append(new_item)

print("Here is you list:")

for item in shopping_list:

  print (",".join(shopping_list))

2 Answers

White Moses
White Moses
3,589 Points

Hi! Because this statement - print (",".join(shopping_list)) prints all list devided by comas and it repeats as much as quantity of items in list. But you might need print only items, just change you print to 'print(item)'

Chris Freeman
MOD
Chris Freeman
Treehouse Moderator 68,468 Points
Chris Freeman
Chris Freeman
Treehouse Moderator 68,468 Points

Looking at the last for loop statement:

Python 3.4.3 (default, Oct 14 2015, 20:28:29) 
[GCC 4.8.4] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> shopping_list = ['apple', 'banana', 'grape']
>>> for item in shopping_list:
...   print (",".join(shopping_list))
... 
apple,banana,grape
apple,banana,grape
apple,banana,grape
>>>

For each item in the shopping_list, the print statement is being executed.

You do not need the for loop. Simply removed the for loop and unindent the print statement.