Nested variables within strings.

[Onishion]

I've been using a method for selecting random lines within a dialog, and it mostly works great, but I hit a snag when trying to use a variable within that dialog, in that basically it does not use the variable and instead just says the variable name. Here's what I'm working with in simple form:

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$ Weapon = "sword"
$ Enemy = "slime"
$ Line = renpy.random.choice(["You swing your [Weapon].",                 
    "You leap over the [Enemy]'s attack and bring your [Weapon] down on its head.",
    "You dodge to the side and then stab the enemy."])  

"[Line]"

Now I use it in a more complex fashion later, but not in a way that should change anything. Anyways, the intended behavior is obviously that if option 2 gets chosen, when it gets to "[Line]" it will say "You leap over the slime's attack and bring your sword down on its head.", instead it says "You leap over the [Enemy]'s attack and bring your [Weapon] down on its head." I'm guessing it's because when I reference a variable in a string, that is then added into a variable, it has trouble referencing those variables? Like maybe it doesn't parse what the actual variable is when I assign the Line, but rather when it's displayed or something? Is there some simple workaround for this? If not I can just rewrite the portions that don't work, but I could make some more interesting narrative if I can make this work.

[trooper6]

You can do this two different ways.
Option 1, with concatenation:

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    $ Line = renpy.random.choice(["You swing your "+Weapon+".",                 
    "You leap over the "+Enemy+"'s attack and bring your "+Weapon+" down on its head.",
    "You dodge to the side and then stab the enemy."]) 

Option 2, with formatting options:

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    $ Line = renpy.random.choice(["You swing your {0}.".format(Weapon),                 
    "You leap over the {0}'s attack and bring your {1} down on its head.".format(Enemy, Weapon),
    "You dodge to the side and then stab the enemy."])  

My understanding is that Option 2 is faster than Option 1.

[Onishion]

Huh. I've never seen anything like either of those options. I'll give them a shot though, thanks. Are both of those "baked in" at the point that I write that, or are they computed later in the process? Like if I did:

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 $ Line = renpy.random.choice(["You swing your {0}.".format(Weapon),                 
    "You leap over the {0}'s attack and bring your {1} down on its head.".format(Enemy, Weapon),
    "You dodge to the side and then stab the enemy."])  

 $ Line = Line + renpy.random.choice([" It hits.",                 
    " It misses."])  

"[Line]"

Would that properly add the two sentences together, or would it leave the variables broken?

[trooper6]

Have you taken the basic Python course from codeacademy.com? If you haven't, you should. It includes information on strings and how to play with them.
You can further concatenate the variable. It works.