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ryan smith
687 PointsMy To Do List is not working
This is not part of my second shopping list app.. it's a to-do list. My objective is when I do
- Apple
- (Pretend: I type an entry in the todo list as a space by accident)
- Banana
it usually shows up with the space as when printed
- Apple
- Space Shows Up
- Banana
But, I want it to show up with the space eliminated
- Apple
- Banana
My Code here when run it will first work and once I type DONE, it reverts back to treehouse:~/workspace$ on a new line
todo_list = []
print("Welcome, this is a to-do list")
print("To finish type DONE")
while True:
new_item = input("> ")
if new_item == "DONE":
break
todo_list.append(new_item)
if new_item:
todo_list.remove(new_item)
for item in todo_list:
print(item)
3 Answers
Ari Misha
19,323 PointsHiya Ryan! I checked your code and instead of telling you hows it needs to be done , i'll point out the part of your code which is creating a bug in your code:
todo_list = []
print("Welcome, this is a to-do list")
print("To finish type DONE")
while True:
new_item = input("> ")
if new_item == "DONE":
break
todo_list.append(new_item)
------------------------------------------
if new_item:
todo_list.remove(new_item)
------------------------------------------
for item in todo_list:
print(item)
Do you see that box i drew (well i tried lol)? That part of code says, if "new_item"(which is an input from user, right?) exists, then remove it from "todo_list" list. Also your last "for" loop is not indented with your infinite "for" loop. I hope this helped. (:
Ari Misha
19,323 PointsHiya again! If you wanna do "if new_item is false or blank", try "if !new_item". Also if something doesnt exist, how could remove it from "todo_list", right?
ryan smith
687 Points!new_item does not work.
if !new_item:
todo_list.remove(new_item)
I get
File "test.py", line 9
if !new_item:
^
SyntaxError: invalid syntax
Ari Misha
19,323 PointsHiya again! I think you misunderstood my point. I was saying that if you wanna check for if something is blank or false, you could try "if not new_item". But i also mentioned that if something doesnt exist, how could you remove it in the first place?
Btw im sorry i told ya to try "if !new_item" coz i forgot its Python. I assumed its Ruby lol. So yeah my bad. Try "if not new_item" (:
ryan smith
687 PointsHi, I just tried something else out. I'm not blaming you or anything (everyone makes mistakes), but the section between the ----- stays the same and does not need to be part of the while loop due to it happening after someone writes DONE, the loop break, etc... The only thing I needed to add was not Regardless, thanks for your help!
todo_list = []
print("Welcome, this is a to-do list")
print("To finish type DONE")
while True:
new_item = input("> ")
if not new_item == "DONE":
break
todo_list.append(new_item)
if new_item:
todo_list.remove(new_item)
---------------------
for item in todo_list:
print(item)
---------------------
ryan smith
687 Pointsryan smith
687 PointsThanks, So the reason i did if new_item: was because I was trying to say if the new item was a blank or false then it removes. am i supposed to add None?