# coding:utf-8

file1 = open('data.txt', 'r', encoding='utf-8')   # 打开要去掉空行的文件
file2 = open('data2.txt', 'w', encoding='utf-8')  # 生成没有空行的文件

for line in file1.readlines():
    if line == '\n':
        line = line.strip('\n')
    file2.write(line)

file1.close()
file2.close()