import arcpy from arcpy import env from arcpy.sa import * arcpy.env.workspace = r"I:\ARW_Data\Data\Raw_Data\Soil_Moisture\2011" arcpy.env.overwriteOutput = True arcpy.CheckOutExtension('Spatial') mask = r"I:\ARW_Data\slc_90m_clip1" arcpy.env.cellSize = r"I:\ARW_Data\slc_90m_clip2" rasters = arcpy.ListRasters("*.tif", "TIF") for raster in rasters: outraster = raster.replace('.tif','_clip.tif') arcpy.gp.ExtractByMask_sa(raster,mask,outraster)