[Tutor] writing function changeColor

[Lee Harr]

> I learned python so that if I were to put in 0.9, it'd decrease red by 10%.> The way this function needs to be written, -0.1 decreases red by 10%
It sounds like you have something like ...
def f1(color, redchange=0, bluechange=0, greenchange=0):    # some code here to make the changes    return modified_color
calling it like ...
>>> c = Color(red=200, blue=100, green=50)>>> c(200, 100, 50)>>> f1(c, redchange=0.9)(180, 100, 50)
but what you want is ...
>>> f1a(c, redchange=-0.1)(180, 100, 50)

Maybe, since you already have a function that works, youcould write f1a as a function that calls f1 as a helper, usingmodified parameters.
def f1a(color, redchange=0, bluechange=0, greenchange=0):    # some code to modify the parameters to fit your function f1    return f1(color, modredchange, modbluechange, modgreenchange)

So... we just need some code to convert 0.9 to -0.1 (and weneed to think about other possible values that could be sentto f1 and what f1a would want in the same situation.)

There's a very simple way to convert 0.9 to -0.1 but I'm notsure that's what you want.
Would you also want:
>>> f1(c, redchange=0.5)(100, 100, 50)>>> f1a(c, redchange=-0.5)(100, 100, 50)
How about ...
>>> f1(c, redchange=0)(0, 100, 50)>>> f1a(c, redchange=-1.0)(0, 100, 50)
Or ...
>>> f1(c, redchange=1.2)(240, 100, 50)>>> f1a(c, redchange=0.2)(240, 100, 50)
?