import arcpy,datetime,os
arcpy.env.overwriteoutput = True
mxd = r"C:/GIS/Project.mxd"
fc = r"X:/GIS/data.gdb/grid"
field = "Species"
datefield = "Season"
output = r"C:/Alex/hidef_gisimport/Westlich_Adlergrund/TEST"
printresulution = 150
def multiMap(mxd,fc,field,datefield,output,printresulution):
    mxd2 = mxd
    mxd = arcpy.mapping.MapDocument(mxd2)
    data_frame = arcpy.mapping.ListDataFrames(mxd)[0]
    layer = arcpy.mapping.Layer(fc)
    layername = layer.name
    specieslist = []
    datelist = []
    cursor = arcpy.SearchCursor(fc)
    for row in cursor:
        if row.getValue(field) not in specieslist:
            specieslist.append(row.getValue(field))
        if row.getValue(datefield) not in datelist:
            datelist.append(row.getValue(datefield))
    counter = 0
    for tag in range(0,len(datelist)):
        counter += 1
        for specie in range(0,len(specieslist)):
            where_clause =  "%s = '%s' AND %s = '%s'" % (field,specieslist[specie],datefield,datelist[tag])
            layer.definitionQuery = where_clause
            for lyr in arcpy.mapping.ListLayers(mxd, "Raster_grouplayer",arcpy.mapping.ListDataFrames(mxd)[0]):
                arcpy.mapping.AddLayerToGroup(arcpy.mapping.ListDataFrames(mxd)[0],lyr,layer,"TOP")
                mxd.save()
                layer.visible = True
                arcpy.RefreshTOC()
                arcpy.mapping.ExportToPNG(mxd, output + os.sep + specieslist[specie].replace(".","").replace(r"/","_").replace(",","_") + "_" + str(counter) + "_" + datelist[tag].replace(".","").replace("/","").replace(" ","_") + r".png",resolution=printresulution)
            mxd.save()
            del data_frame,mxd
            mxd = arcpy.mapping.MapDocument(mxd2)
            data_frame = arcpy.mapping.ListDataFrames(mxd)[0]
            layerlist = arcpy.mapping.ListLayers(mxd,"",data_frame)
            for element in layerlist:
                if element.name == layername:
                    arcpy.mapping.RemoveLayer(data_frame,element)
            mxd.save()
    mxd = arcpy.mapping.MapDocument(mxd2)
    mxd.save()
multiMap(mxd,fc,field,datefield,output,printresulution)