[BUG] Access Method returning Incomplete Tuple

The Bug

Familiarising myself with Evennia, I was running through the First Steps coding tutorial. As documented, I re-wrote the at_object_creation function in the Character class to assign 3 persistent ability attributes (self.db.strength, self.db.agility, self.db.magic) the values of 5, 4, and 2 respectively. Then, I wrote a function to return those values as a tuple.

When I @reload, @update, and call this function in-game, however, it only returns the first element, 5. The entries exist in the database, confirmed with @examine self, and the values can be printed and indexed from the tuple.

Input

In typeclasses.characters, as found in the documentation:

    def at_object_creation(self):
        """
        Called only at initial creation. This is a rather silly
        example since ability scores should vary from Character to
        Character and is usually set during some character
        generation step instead.
        """
        #set persistent attributes
        self.db.strength = 5
        self.db.agility = 4
        self.db.magic = 2

    def get_abilities(self):
        """
        Simple access method to return ability
        scores as a tuple (str,agi,mag)
        """
        return self.db.strength, self.db.agility, self.db.magic

Expected Result

@py self.get_abilities() *>>> (5, 4, 2)

Evennia correctly returns all elements in the tuple corresponding to persistent data.

Actual Result

reload

Server restart initiated … … Server restarted. update rainboa rainboa updated its existing typeclass (typeclasses.characters.Character). Only the at_object_creation hook was run (update mode). Attributes set before swap were not removed. py self.get_abilities() >>> self.get_abilities() 5 examine self

Name/key: rainboa (#1) Session id(s): #1 Account: rainboa Account Perms: <Superuser> Typeclass: Character (typeclasses.characters.Character) Location: Limbo (#2) Home: Limbo (#2) Permissions: developer [Superuser] Locks: … Commands: … Persistent attributes: desc = This is User #1. prelogout_location = Limbo strength = 5 agility = 4 magic = 2

Steps Taken

I have:

• Tried this on a clean database.
• Tried this on a new character.
• Reproduced this in Linux and Windows.
• Experimented with writing different functions that do the same thing.
• Experimented with making the attributes non-persistent.

Systems Information

OS

1. Windows 10Ver1909 (64-bit) build 18363.592
2. Debian GNU/Linux 10

Python, Evennia, Etc

Evennia version: 0.9.0 (rev 798cacc2) OS: nt Python: 3.8.1 Twisted: 19.10.0 Django: 2.2.9

[strikaco]

@Oscuro87

Your notation should not be an issue be you never know.

Even though that wasn’t the issue in this case, this is still a fair concern to be wary of in any Python codebase that was ever ported from 2.x to 3.x. There are quite a few subtle syntactical gotchas that were introduced in that migration, affecting even basic mechanics like how the division operator works 😕

[Oscuro87]

@Oscuro87

Your notation should not be an issue be you never know.

Even though that wasn’t the issue in this case, this is still a fair concern to be wary of in any Python codebase that was ever ported from 2.x to 3.x. There are quite a few subtle syntactical gotchas that were introduced in that migration, affecting even basic mechanics like how the division operator works 😕

True, I even remember when I first came across python 3, and all my print "some string" suddenly died 🤣. Thankfully the error message was developer friendly IIRC.