python arcpy检索ftp中的文件

import ftplibnimport osnimport socketnnHOST = ‘ftp.nifc.gov’nDIRN = ‘/Incident_Specific_Data/2012 HISTORIC/ROCKY_MTN/Arapaho/GIS/20120629’nFILE = ‘20120629_0600_Arapaho_PIO_0629_8x11_land.pdf’nntry:n …