How blender plot a functional curve | with source code

below code shows How blender scripting plot a functional curve,

import bpy
from mathutils import Vector
import numpy as np

current_scene = bpy.context.scene

default_cube = current_scene.objects['Cube']

# X, Y, and Z location to set
default_cube.location = (0.0, 0.0, 0.0)
# Set the keyframe with that location, and which frame.
default_cube.keyframe_insert(data_path="location", frame=1)

# do it again
default_cube.location = (3.0, 2.0, 1.0)
# setting it for frame 10
default_cube.keyframe_insert(data_path="location", frame=10)
w = 5
def MakePolyLine(objname, curvename, cList):  
    curvedata = bpy.data.curves.new(name=curvename, type='CURVE')  
    curvedata.dimensions = '3D'  
  
    objectdata = bpy.data.objects.new(objname, curvedata)  
    objectdata.location = (0,0,0) #object origin  
    bpy.context.collection.objects.link(objectdata)  
  
    polyline = curvedata.splines.new('NURBS')  
    polyline.points.add(len(cList)-1)  
    for num in range(len(cList)):  
        polyline.points[num].co = (cList[num])+(w,)  
  
    polyline.order_u = len(polyline.points)-1
    polyline.use_endpoint_u = True
    
def func(x):
    return 0.2 * x**2

xx = np.linspace(0,10,100)
yy = func(xx)
listOfVectors = [(x,y,0) for x,y in zip(xx, yy)] 
MakePolyLine("NameOfMyCurveObject", "NameOfMyCurve", listOfVectors)

vectors = []
xArr = np.linspace(10,20, 100)
for x in xArr:
    vectors.append((x, 20, 0))

MakePolyLine("Name2", "curveLine2", vectors)