arcgis 10.0 - Creating multiple parallel lines using ArcPy?

I'm using the following code to create multiple parallel lines

import arcpy, math

offset = 3
offset_original = offset
features=[]

arcpy.env.overwriteOutput = True

infc="Export_Output_4_SmoothLine"
talhao = "Export_Output_5"

spatialRef = arcpy.Describe(infc).spatialReference

def CopyParallel(plyP,sLength):
    part=plyP.getPart(0)
    lArray=arcpy.Array();rArray=arcpy.Array()

    for ptX in part:
        dL=plyP.measureOnLine(ptX)
        ptX0=plyP.positionAlongLine (dL-0.01).firstPoint
        ptX1=plyP.positionAlongLine (dL+0.01).firstPoint
        dX=float(ptX1.X)-float(ptX0.X)
        dY=float(ptX1.Y)-float(ptX0.Y)
        lenV=math.hypot(dX,dY)
        sX=(-dY*sLength/lenV);sY=dX*sLength/lenV
        leftP=arcpy.Point(ptX.X+sX,ptX.Y+sY)
        lArray.add(leftP)

        rightP=arcpy.Point(ptX.X-sX, ptX.Y-sY)
        rArray.add(rightP)
    array = arcpy.Array([rArray, lArray])
    section=arcpy.Polyline(array, spatialRef)
    return section


with arcpy.da.UpdateCursor(infc,["SHAPE@"]) as cursor:
    for shp in cursor:
        i=0

        while i <= 100:
            print str(i)
            if (i > 0):
                offset = offset + offset_original
            twoLines=CopyParallel(shp[0],offset)
            temp=twoLines
            features.append(twoLines)
            i=i+1

arcpy.CopyFeatures_management(features, "test")

It happens that after a while he starts to create lines in this way

How do I get these intersections or not create them in the script?