Ok i need to make a table to keep track of a list of things in my game's solar system.


so i need so do like
sol = #mytable here

And so there is going to be two columns in the table:

Object Name l Object Type
-------------------------------------
Earth l Planet
Iss l Satellite
Sun l Star

So the list would go on. First of all , how do i create this two dimensional table?

And the next part to my question is:

WHenever the player enters a new solar system. I need it to render the various objects. So for example. I have a planet class. But i need it to detect which objects in that list have the "type" planet

So i want to do like:

foreach planet IN sol:
#Render

But i know that isnt the right syntax. SO how would i do that?


And another thing that would help me is if its possible to make a 3 dimensional table?
Like instead of making one of these 2d tables for each of the areas. I could have one big table. And so if that is possible how do i do that?

Sorry if i was unclear i would be happy to clarify anything and thanks for your help

The quick and easy way: use a dictionary.

a dict type is having one variable "define" another, and there isn't any order to it (in theory), as in you can't use index positions like you could if it were a list.

A basic dictionary:

solar_system = {"Sun": "Star", "Earth": "Planet", "ISS": "Satellite", "Moon": "Satellite"}

any type before the ":" is known as the key, and any type after is known as the value.

so say you wanted to see way objects were of the same value:

>>> solar_system["Sun"] == solar_system["Moon"]
False
>>> solar_system["ISS"] == solar_system["Moon"]
True

Of course there is clever ways to iterate over keys and values, but a quick glance at pydoc should help out.

There is also a second version of dict called collections.defaultdict ... a defaultdict is the same except instead of raising a KeyError when a key isn't found, it simply creates a new key (this is great for input!)

ok one more question. How can i do a foreach loop with this?

You can loop through a dictionary by this way-