i solved the problem by myself # Import system modules
import sys, string, os, arcgisscripting
# Create the Geoprocessor object
gp = arcgisscripting.create()
#
gp.SetProduct("ArcInfo") # or ArcEditor or ArcInfo
gp.overwriteoutput = 1
# Load required toolboxes...
gp.AddToolbox("C:/Program Files/ArcGIS/ArcToolbox/Toolboxes/Data Management Tools.tbx")
gp.AddToolbox("C:/Program Files/ET GeoWizards 9.9 Floating/ET GeoWizards.tbx")
gp.AddToolbox("C:/Program Files/ArcGIS/ArcToolbox/Toolboxes/Conversion Tools.tbx")
#script arguments
#orbit = "D:/f/Cap/tanProblem/output/o_90.lyr"
orbit = "D:/f/Cap/tanProblem/input/o_90.shp"
O1_mollw_90 = "o_90"
O1_mollw_90_1_Dissolve_shp = "D:/f/Cap/tandem Problem/input/o_90_Dissolve.shp"
tandem_shp = "D:/f/Cap/tanProblem/output/new/tan.shp"
tandem_Copy_shp = "D:/f/Cap/tanProblem/output/new/tan_Copy.shp"
#add join
tap_dbf = "D:/f/Cap/tanProblem/Test_o1.dbf"
v90_output = "D:/f/Cap/tanProblem/output/new"
Output_Feature_Class = "D:/f/Cap/tanProblem/output/90_output/tan_CopyFeatures.shp"
#read row of txt file
f=open("D:/f/Capa/tanProblem/Test_o13.txt","r")
for line in f.readlines(): #in huge file f.xreadlines maybe to use
werte = line.split('\t')# für tab-separate
min_row = werte[4]
max_row = werte[5]
index = werte[0]
O = werte[3]
if Orbit == "O":
continue
O = int(O)
min_row = int(min_row)
max_row = int(max_row)
index = int(index)
print "min_row=%s, max_row=%s, index=%s, O=%s" % (min_row, max_row, index, O)
Expression = "\"FID\" >= %d+90*(%d-1) AND \"FID\" <= %d+90*(%d-1)" % (min_row, O, max_row, O)
#Expression = "\"FID\" >= %min_row%+90*(%O%-1) AND \"FID\" <= %max_row%+90*(%O%-1)"
Expression_2 = "%d-3" % (index)
# Process: Select Layer By Attribute...,
gp.makefeaturelayer(o, "walk")
gp.SelectLayerByAttribute_management ('walk' , "NEW_SELECTION", Expression)
# Process: Dissolve...
gp.Dissolve_management('walk', O1_mollw_90_1_Dissolve_shp, "FID", "", "MULTI_PART", "DISSOLVE_LINES")
gp.makefeaturelayer(O1_m_90_1_Dissolve_shp, "walk2")
# Process: Calculate Field...
gp.CalculateField_management("walk2", "ID", Expression_2, "VB", "")
# Process: ET Select And Export...
gp.toolbox = "C:/Program Files/ET GeoWizards 9.9 Floating/ET GeoWizards.tbx";
gp.ET_GPSelectAndExport("walk2", tandem_shp, "")
gp.makefeaturelayer(tandem_shp, "tan")
# Process: Add Join...
gp.AddJoin_management("tan", "FID", tap_dbf, "OID", "KEEP_COMMON")
# Process: Feature Class To Shapefile (multiple)...
gp.CopyFeatures_management("tan", Output_Feature_Class, "", "0", "0", "0")
#gp.DeleteField_management(Output_Feature_Class, "Id;ET_ID;Test_o;Test_o_1;Test_o_4;Test_o_5")
gp.FeatureClassToShapefile_conversion(Output_Feature_Class, v90_output)