Reading External Datagroup files via iControlREST

Thank you Kailas ... it worked. Below is my working script to read the contents of all the data groups and display its contents.

dglist = mgmt.tm.util.bash.exec_cmd(
    'run', utilCmdArgs='-c "ls /config/filestore/files_d/Common_d/data_group_d"')

 Write to a file and then read it line by line
dgfile = open("dgfilelist", "w")
dgfile.write(dglist.commandResult)
dgfile.close()
dgfile = open("dgfilelist", "r")
for file in dgfile:
    dgshow = mgmt.tm.util.bash.exec_cmd('run', utilCmdArgs='-c "cat /config/filestore/files_d/Common_d/data_group_d/{0} " '.format(file))
     print file contents
    print (dgshow.commandResult)
    print ("========")