python - 如何根据逗号分割文件行并连接新字符串

Question

我有一个文件，其中包含如下行，文件位于/tmp/file

            cat /tmp/file
            server1,server2
            server4,server4

我想将每一行连接到新单词“.com”，因此它如下所示。当我隐藏这个并拆分它时不起作用，请指导

        newfile = server1.com,server2.com
                  server3.com,server4.com



            with open('/tmp/file', 'r') as file1:
                   newline = ''
                   for line in file1:
                       y = line.split()
                       print(y)
                   for line in y:
                       z = str(y).split(',')
                       print(z)
                       newline = str(z)+".com".join('' )
                   print(newline)

结果:

            ['server1,server2']
            ['server3,server4']
            ["['server3", "server4']"]
            ["['server3", "server4']"]

预计: server1.com,server2.com server3.com,server4.com

Answer 1

with open('/tmp/file', 'r') as r:
    for line in r:
        newline = line.strip()
        newline = newline.split(',')
        for i in range(len(newline)):
            newline[i] = newline[i] + ".com"
        newline = ",".join(newline)
        print newline

这段代码还可以优化很多。但这是为了更好地理解