02A_Clau_from points to curves

In the first part of this exercise I took the code of the previous assingment, but instead of plotting points I generated curves (see image). Then I tried to convert the code into a function and return the value but didn't get a result. I have a Syntax Error. I don't know where is the mistake.

import maya.cmds as cmds
from math import*
from random import*
######################################################
#from points to curves
#defining initial variables
numRows= 40
numColumns=4
numLevels=12
amplitude = 12

#create an empty list to store the points
points= []

#defining the loop and gather information
for i in range (-1,numRows,1):
    x= sin(6*i)*amplitude
    for j in range (-1,numColumns,2):
        y= cos(i)*8
        for k in range (0,numLevels,1.5):
            z= k+1
                    myPoint=(x,y,z)
            #store the point in the list
            points.append(myPoint)

    #create the curve
    cmds.curve (d= 3, p= points) #curve degree 3 

######################################################
######################################################
#2ND PART
#####################################################
#defining initial variables
numRows= 40
numColumns=4
numLevels=12
amplitude = 12

#defining the curve
def Curves (numPoints, amplitude)

#create an empty list to store the points
points= []

#loop and gather point information
for i in range (-1,numRows,1):
    x= sin(6*i)*amplitude
    for j in range (-1,numColumns,2):
        y= cos(i)*8
        for k in range (0,numLevels,1.5):
            z= k+1
                    myPoint=(x,y,z)
            #store the point in the list
            points.append(myPoint)

    #creating the curve
    myCurve= cmds.curve (d=3, p=points) #curve degree 3

    #returning the name of the curve created
    return myCurve