Script Tool Help! df = arcpy.mapping.ListDataFrames(mxd)[0] ISSUE

Discussion created by cgarlock on Mar 28, 2013
Latest reply on Apr 1, 2013 by curtvprice
I'm trying to create a script tool but when I run the tool I keep getting and error message: I'm not sure what the problem is with
the  df = arcpy.mapping.ListDataFrames(mxd)[0]

Traceback (most recent call last):
  File "C:\Users\Courtney\Desktop\", line 14, in <module>
    df = arcpy.mapping.ListDataFrames(mxd)[0]
  File "c:\program files (x86)\arcgis\desktop10.1\arcpy\arcpy\", line 181, in fn_
    return fn(*args, **kw)
  File "c:\program files (x86)\arcgis\desktop10.1\arcpy\arcpy\", line 1478, in ListDataFrames
    result = mixins.MapDocumentMixin(map_document).listDataFrames(wildcard)
  File "c:\program files (x86)\arcgis\desktop10.1\arcpy\arcpy\arcobjects\", line 727, in listDataFrames
    return list(reversed(list(self.dataFrames)))
  File "c:\program files (x86)\arcgis\desktop10.1\arcpy\arcpy\arcobjects\", line 694, in dataFrames
    return map(convertArcObjectToPythonObject, self.pageLayout.dataFrames)
  File "c:\program files (x86)\arcgis\desktop10.1\arcpy\arcpy\arcobjects\", line 678, in pageLayout
    return convertArcObjectToPythonObject(self._mxd._arc_object.pageLayout)
AttributeError: 'unicode' object has no attribute '_arc_object'

Failed to execute (ScriptTool).


#Import Modules
import arcpy
from arcpy import env
import datetime
import os

arcpy.env.overwriteOutput = True

#Define Variables
mxd = arcpy.mapping.MapDocument = arcpy.GetParameterAsText(0)
env.workspace = arcpy.GetParameterAsText(1)
df = arcpy.mapping.ListDataFrames(mxd)[0]

#Define variables
featureClass = arcpy.GetParameterAsText(2)
layer = "AISlayer"  #layer Name
OutlyrFile = r"C:\Courtney\Jan1AIS.lyr"   
addLayer = arcpy.mapping.Layer(OutlyrFile)

#Make a layer from the feature class
arcpy.MakeFeatureLayer_management(featureClass , layer) #This creates a temporary layer in memory
#Save the layer in memory to layer
arcpy.SaveToLayerFile_management(layer, OutlyrFile) #This saves the layer to the disk

#Check to see if layer supports time and if time properties are set
lyr = addLayer
if lyr.supports("TIME"):
    lyrTime = lyr.time
    if lyr.time.isTimeEnabled:
        LYRstartTime = lyrTime.startTime
        LYRendTime = lyrTime.endTime
        timeDelta = LYRendTime - LYRstartTime
        print "Start Time: " + str(LYRstartTime)
        print "End Time: " + str(LYRendTime)
        print "Time Extent: " + str(timeDelta)
        print "No time properties have been set on the layer"
        #Enables time on a layer with another already time enabled layer
        #Do this within the else statement because you only want to enable time if it isn't already
        #df = arcpy.mapping.ListDataFrames(mxd)[0]
        #lyr = arcpy.mapping.ListLayers(mxd, "Jan1AIS", df)[0]
        timeFile = arcpy.mapping.Layer(r"C:\Courtney\TimeLayer.lyr") #originally authored in ArcMap                                                              
        arcpy.mapping.UpdateLayerTime(df, lyr, timeFile)             #refrence in toolbox, SAVE ZIP, navigate to file
        print "Time has been enabled."
    print "Time is not supported on this layer"

#Add layer to the data frame
arcpy.mapping.AddLayer(df, addLayer)
#Save the mxd

lyr = arcpy.mapping.ListLayers(mxd, layer, df)[0]
for df in arcpy.mapping.ListDataFrames(mxd):
    #zoom to to the extent of the selected features for a specific layer
    df.extent = lyr.getSelectedExtent()
    #Set mape scale...each data frame's rotation property to 0 and scale property to 1:20,000,000
    df.rotation = arcpy.GetParameterAsText(3)    #0
    df.scale = arcpy.GetParameterAsText(4)      #20000000
    mxd.activeView = 'PAGE_LAYOUT'

inFolder = arcpy.GetParameterAsText(5)

df.time.currentTime = arcpy.GetParameterAsText(6)          #datetime.datetime(2009, 01, 1, 00, 00)
endTime = arcpy.GetParameterAsText(7)                 #datetime.datetime(2009, 01, 1, 23, 59)
interval = arcpy.GetParameterAsText(8)             #arcpy.time.EsriTimeDelta(1, 'hours')
                                                    #or #interval = datetime.timedelta(hours=1)