Multiple instances of a path

I'm using NodeBox 1.0rc7 with the Cornu library. How can I get Path 1 and Path 2 to be the same? The code is:

cornu = ximport("cornu")
 
size(400, 400)
colormode(CMYK, range=100)
 
def curva():
    crpoints = []
    for i in range(4):
        x = random(0.25, 0.75)
        y = random(0.25, 0.75)
        coordenadas = (x, y)
        crpoints.append(coordenadas)
    p = cornu.path(crpoints, tweaks=1)
    drawpath(p)
 
nofill()
strokewidth(0.5)
stroke(100, 0, 0, 0)
 
# Path 1
curva()
 
# Path 2. It must be the same as path 1 but scaled (or rotated, translated, etc.)
scale(.5)
curva()

Hm… Ah hah! If I am correct, you must create the path, transform, and then draw it. Here is a revised version:

cornu = ximport("cornu")
 
size(400, 400)
colormode(CMYK, range=100)
 
def curva():
    crpoints = []
    for i in range(4):
        x = random(0.25, 0.75)
        y = random(0.25, 0.75)
        coordenadas = (x, y)
        crpoints.append(coordenadas)
    return cornu.path(crpoints, tweaks=1)
 
nofill()
strokewidth(0.5)
stroke(100, 0, 0, 0)
 
# Path 1
drawpath(curva())
 
# Path 2. It must be the same as path 1 but scaled (or rotated, translated, etc.)
p = curva()
scale(.5)
drawpath(p)

Since you are using random() commands inside your curva() command, two calls to curva() will never yield the same path.

You need to create one path from curva(), and then create copies of that path. The path.copy() command doesn't work with NodeBox 1.0rc7, but there's another way: drawpath() also accepts a list of points.

p1 = curva()
drawpath(p1)
 
try:
    # NodeBox 1.9
    p2 = p1.copy()  
except:
    # NodeBox 1.0rc7
    p2 = [pt for pt in p1] 
scale(0.5)
drawpath(p2)