Ren'Py [Solved]I'm getting this error using Inventory Screen

[rayminator]

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I'm getting this error while using $ inventory.drop(sex_licence)

I'm sorry, but an uncaught exception occurred.

While running game code:
  File "game/script.rpy", line 32, in script
    $ inventory.drop(sex_licence)
  File "game/script.rpy", line 32, in <module>
    $ inventory.drop(sex_licence)
      ~~~~~~~~~~~~~~^^^^^^^^^^^^^
  File "game/class.rpy", line 172, in drop
    self.items.remove(item)
    ~~~~~~~~~~~~~~~~~^^^^^^
ValueError: list.remove(x): x not in list

-- Full Traceback ------------------------------------------------------------

Traceback (most recent call last):
  File "game/script.rpy", line 32, in script
    $ inventory.drop(sex_licence)
  File "renpy/ast.py", line 1187, in execute
    renpy.python.py_exec_bytecode(self.code.bytecode, self.hide, store=self.store)
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "renpy/python.py", line 1260, in py_exec_bytecode
    exec(bytecode, globals, locals)
    ~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "game/script.rpy", line 32, in <module>
    $ inventory.drop(sex_licence)
      ~~~~~~~~~~~~~~^^^^^^^^^^^^^
  File "game/class.rpy", line 172, in drop
    self.items.remove(item)
    ~~~~~~~~~~~~~~~~~^^^^^^
  File "renpy/revertable.py", line 81, in do_mutation
    return method(self, *args, **kwargs)
           ~~~~~~^^^^^^^^^^^^^^^^^^^^^^^
ValueError: list.remove(x): x not in list

Windows-11-10.0.26100-SP0 AMD64
Ren'Py 8.4.0.25071206
Nude Town alpha 0.001
Thu Aug 21 08:33:01 2025

 

[osanaiko]

So... when it says this:

list.remove(x): x not in list

I would probably guess that means x is not in the list.

i.e. sex_license is not in the inventory.

1. did the player get to the point in the game without ever getting that item in their inventory in the first place?
2. or is the thing in the list actually "sex_license" not sex_license (without the quotes)?

BTW your inventory class should probably check if the item that is being asked to drop is actually in the list before attempting to remove it.

 

[rayminator]

here some screenshots with and without the sex_license

it working but the drop item

 

[Winterfire]

That's so outdated and basic, without even looking at it, I can guess it's using a lot of outdated and slow methods. Why would you refer to that, and not something as basic but recent/explained such as:

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Or something more complex/better done yet recent like this:

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or many more which you can find on google/itch

 

[rayminator]

That's so outdated and basic, without even looking at it, I can guess it's using a lot of outdated and slow methods. Why would you refer to that, and not something as basic but recent/explained such as:

You must be registered to see the links

Or something more complex/better done yet recent like this:

You must be registered to see the links

or many more which you can find on google/itch

i am now using Enhanced Renpy Inventory and it's working fine

 

[papel]

In situations like that, it's a good thing to experiment printing the list and the object being passed in the function, so you can compare and check whether it's actually attempting to remove the right thing.
print(self.items)
print(item)

 

[rayminator]

In situations like that, it's a good thing to experiment printing the list and the object being passed in the function, so you can compare and check whether it's actually attempting to remove the right thing.
print(self.items)
print(item)

thanks for the help but it solved now

 

[anne O'nymous]

I noticed that you solved the issue, but as reference for future readers who wouldn't have the option to switch to an alternate code:

  File "game/script.rpy", line 32, in <module>
    $ inventory.drop(sex_licence)
      ~~~~~~~~~~~~~~^^^^^^^^^^^^^
  File "game/class.rpy", line 172, in drop
    self.items.remove(item)
    ~~~~~~~~~~~~~~~~~^^^^^^
ValueError: list.remove(x): x not in list

A good practice, is to never blindly remove an entry from a list, set or dict. Always validate first if the entry is in it.

So, the direct solution to this issue would have been to edit the drop method to looks likes this:

    if item in self.items:
        self.items.remove( item )

If the "item" is in the list, it will be removed. And if it isn't, nothing will happen, what isn't a problem since it will lead to the same result, do so "item" isn't in the list.

 

[Mattock]

sorry for the smartypants...but as "reference for future readers" please note the:
-more complicted
-less understandable for new coders
-but...the python way to do it:

try:
    self.items.remove( item )
except:
    pass

for more details see:

You must be registered to see the links

*ducks*, sorry! sorry;)

 

[anne O'nymous]

for more details see:

You must be registered to see the links

*ducks*, sorry! sorry;)

And here come the reason why I still hate Python despite using it a lot

Making exceptions be the rule is [I'll not even say it ]. Be nice with your players, show them that you care about their wellbeing.