import bpy
from bpy import context
from math import sin, cos, radians
import mathutils
from mathutils import Vector

#set the name of the object
nameo = "CustomLine"

#if the mesh already exists, delete it
for ob in bpy.context.scene.objects:
    if ob.type == 'MESH' and nameo in ob.name:
        ob.select = True
        bpy.ops.object.delete()
    else:
        ob.select = False

#create a mesh where the x and z values of each vertex follow sine and cosine curves
#and the y value simply increments forward on the y axis.

verts = []
faces = []


for i in range(360):
    z = 10*sin(radians(i))
    x = 10*cos(radians(i))
    y = i/10
    verts.append((x,y,z))

for i in range(359):
    faces.append((i,i+1))

verts = tuple(verts)
faces = tuple(faces)

me = bpy.data.meshes.new("Mesh" + nameo)
ob = bpy.data.objects.new(nameo, me)
ob.location = Vector((0,0,0))

scn = bpy.context.scene
scn.objects.link(ob)
scn.objects.active = ob
ob.select = True

me.from_pydata(verts, [], faces)
me.update()

#select the recently created object and make it the active object
for ob in bpy.context.scene.objects:
    if ob.type == 'MESH' and nameo in ob.name:
        ob.select = True
        bpy.context.scene.objects.active = ob
    else:
        ob.select = False

bpy.ops.object.mode_set(mode = 'OBJECT')

#create 2 shape keys, the basis, and the shape key that we will alter
obj = bpy.context.object

Basis = obj.shape_key_add(from_mix=False)
Basis.name = "Basis"
shapeKey1 = obj.shape_key_add(from_mix=False)
shapeKey1.name = "ShapeKey1"

#set the current frame to 0 and set the keyframe at a value of 0 at frame = 0
bpy.context.scene.frame_set(0)

shapeKey1.value = 0.0

shapeKey1.keyframe_insert("value",frame=0)

#negate each vertex's value
vertices = obj.data.vertices

for vert in vertices:
    vert.co.z = -vert.co.z

#set a keyframe for the shapekey at a value of 1 at frame 100
shapeKey1.value = 1.0

shapeKey1.keyframe_insert("value",frame=100)