automation of downloading data from AVRIS-NG

RetrieveAVRISNGData.py

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+from ftplib import FTP
+import os, sys, os.path
+
+def handleDownload(block):
+    file.write(block)
+    print ".",
+
+ddir='/Users' # set to local path where you want files downloaded to
+os.chdir(ddir)
+ftp = FTP('avng.jpl.nasa.gov')
+
+print 'Logging in.'
+ftp.login()
+directory = '/AVNG_2015_data_distribution/L2/'
+print 'Changing to ' + directory
+ftp.cwd(directory)
+
+dirnames = ftp.nlst() # get list of directories
+print dirnames
+
+#for each directory, download the directory and its contents to local computer
+for dirname in dirnames:
+    print 'Changing to ' + dirname
+    ftp.cwd(dirname)
+    filenames = ftp.nlst() # get list of filenames in directory
+    print filenames
+    count = 0
+    localpath = ddir + '/' + dirname
+    os.mkdir(localpath) # create this directory locally
+    #download each file to the newly created local directory
+    for filename in filenames:
+        local_filename = os.path.join(localpath, filename)
+        file = open(local_filename, 'wb')
+        ftp.retrbinary('RETR '+ filename, file.write)
+        file.close()
+
+    ftp.cwd('..')
+
+ftp.quit()
+