ArcGIS Split Line at Vertices without an Advanced License

ArcGIS's Split Line At Vertices is a handy tool, but it requires an advanced license. Luckily with a bit of Python magic you can create a feature class of lines split at vertices just like the tool would create.

The code:

##split line at point script
##Emil Brundage
##emilharold@gmail.com

### USER INPUTS

#input feature class
inFc = r"C:\Path\To\Data.gdb\InPolylines"
#output feature class
#will be created by script
outFc = r"C:\Path\To\Data.gdb\OutPolylines"

### END USER INPUTS

#----------

print "importing"
import arcpy
import os

print "creating new feature class"
outPath, outName = os.path.split (outFc)
outFc = arcpy.CreateUniqueName (outName, outPath)
outPath, outName = os.path.split (outFc)
outFc = arcpy.CreateFeatureclass_management (outPath, outName, "POLYLINE", inFc,
                                             spatial_reference = inFc) [0]

print "determining fields"
flds = [f.name for f in arcpy.ListFields (inFc)]
flds = [f.name for f in arcpy.ListFields (outFc) if f.name in flds] + ["SHAPE@"]

print "iterating"
with arcpy.da.InsertCursor (outFc, flds) as iCurs:
    with arcpy.da.SearchCursor (inFc, flds) as sCurs:
        for row in sCurs:
            row = list (row)
            geom = row [-1]
            if not geom:
                iCurs.insertRow (row)
                continue
            for i in range (geom.partCount):
                part = geom.getPart (i)
                fPoint = None
                count = part.count
                for c in range (count):
                    if fPoint == None:
                        fPoint = part.getObject (c)
                        continue
                    lPoint = part.getObject (c)
                    ln = arcpy.Polyline (arcpy.Array ([fPoint, lPoint]))
                    row [-1] = ln
                    iCurs.insertRow (row)
                    fPoint = lPoint

print
print "created:"
print outFc
print
print "done"