Please help

I got this much. But i dont know what to do next.

Write a python script that prompts for the name of a domain scan file. The script should read through the file and count the number of times each domain name appears. The script should then print out the domain names and counts for the 10 most frequent domains. Print each domain and its count on a separate line as shown in the example below (order is not important) Example Input file: ecoli_pfam_scan_long.txt Output: ABC_tran 95 MFS 1 72 BPD_transp_1 52 LysR_substrate 47 HTH1 46 Response_reg 38 HATPase c 32 RHS_repeat 28 Fimbrial 28 Fer4 26