python的练习题 --京东

题目

1. 生成一个大文件ips.txt,要求1200行，每行随机为172.25.254.0/24段的ip;
2. 读取ips.txt文件统计这个文件中ip出现频率排前10的ip;

编程

import random

def create_ip_file(filename):
    ips = ['172.25.254.' + str(i) for i in range(1,255)]
    print(ips)
    with open(filename,'a+') as f:
        for count in range(1200):
            print(random.sample(ips,1))
            f.write(random.sample(ips,1)[0] + '\n')

# create_ip_file('ips.txt')

def sorted_ip(filename,count=10):
    ips_dict = dict()
    with open(filename) as f:
        for ip in f:
            if ip in ips_dict:
                ips_dict[ip] += 1
            else:
                ips_dict[ip] = 1

    sorted_ip = sorted(ips_dict.items(),
                       key=lambda x:x[1],reverse=True)[:count]
    return sorted_ip

print(sorted_ip('ips.txt'))

结果