import arcpy

inFC = r"C:temptestLines.shp"
outFC = r"C:temptestLinesSplit.shp"

if arcpy.Exists(outFC):
    arcpy.Delete_management(outFC)
arcpy.CreateFeatureclass_management("C:/temp","testLinesSplit.shp","POLYLINE","#","DISABLED","DISABLED",inFC)
arcpy.AddField_management(outFC,"inFID","LONG","#","#","#","#","NULLABLE","NON_REQUIRED","#")

iCursor = arcpy.da.InsertCursor(outFC, ["inFID","SHAPE@"])

with arcpy.da.SearchCursor(inFC,["OID@", "SHAPE@"]) as sCursor:
    for row in sCursor:
        inFID = row[0]
        # Print the current multipoint's ID
        #
        print("Feature {0}:".format(row[0]))
        partnum = 0

        # Step through each part of the feature
        #
        for part in row[1]:
            # Print the part number
            #
            print("Part {0}:".format(partnum))

            # Step through each vertex in the feature
            #
            prevX = None
            prevY = None
            for pnt in part:
                if pnt:
                    # Print x,y coordinates of current point
                    #
                    print("{0}, {1}".format(pnt.X, pnt.Y))
                    if prevX:
                        array = arcpy.Array([arcpy.Point(prevX, prevY),
                                             arcpy.Point(pnt.X, pnt.Y)])
                        polyline = arcpy.Polyline(array)
                        iCursor.insertRow([inFID,polyline])
                    prevX = pnt.X
                    prevY = pnt.Y
                else:
                    # If pnt is None, this represents an interior ring
                    #
                    print("Interior Ring:")
            partnum += 1

del iCursor

arcpy.JoinField_management(outFC,"inFID",inFC,"FID","#")

import arcpy
import numpy as np

InFcVF  = r"input.shp" # input feature class
OutFcVF = r"output.shp" # output feature class


print "Daten gelesen.."

# Creates NumPy array from Input Feature

array = arcpy.da.FeatureClassToNumPyArray(InFcVF,["SHAPE@XY"], "", sr, explode_to_points=True)

print "Numpy Array created.."

# if Feature as Array wasnt created

if array.size == 0:
    arcpy.AddError(InFcVF + " contains no feature.")

# Multipoint Feature from arra
else:
    print "Aus Numpy Array wurde ein neues Multipoint Feature (VF) erstellt.."
    arcpy.da.NumPyArrayToFeatureClass(array, OutFcVF, ['SHAPE@XY'], sr)


print "Numpy Array created.."`