编写python程序混合使用split和join的更好技巧

我编写了以下代码：

 with open('inputfile.txt') as f:
     #sending second line to variable port1
     port1 = (f.readlines()[1])
     # Make proper space 
     port1 = " ".join(port1.split())
     print port1
     # fetch eth0 to port1 variable
     port1 = port1.split(" ")[1]
     print port1

inputfile.txt

包含：

  server port1 port2
  server1  eth1    eth2
  server2  eth7    eth8

以上代码运行良好。我得到了预期的结果

---

但代码似乎不是标准的。我多次使用了

port1

。有没有更好的方法来编写此代码？

我不知道是否更好，但另一种方法可能是生成每行代码，如果您知道有多少行：

def get_conf(fn='inputfile.txt'):
    with open(fn) as f:
        for line in f.readlines():
            yield line.split()

c = get_conf()
s, p1, p2 = next(c)
s1, a1, b1 = next(c)
s2, a2, b2 = next(c)

---

我不知道这是否更好，但另一种方法可能是产生每一行，如果你知道有多少行：

def get_conf(fn='inputfile.txt'):
    with open(fn) as f:
        for line in f.readlines():
            yield line.split()

c = get_conf()
s, p1, p2 = next(c)
s1, a1, b1 = next(c)
s2, a2, b2 = next(c)

---

您可以避免拆分并重新加入“游戏”，如下所示：

with open('inputfile.txt') as f:
     #sending second line to variable port1
     port1 = f.readlines()[1]
     # prepare for further processing:
     port1 = port1.split()
     # Print with proper space 
     print " ".join(port1)
     # print eth1 (your input data has no eth0)
     print port1[1]

---

您可以避免拆分并重新加入“游戏”，如下所示：

with open('inputfile.txt') as f:
     #sending second line to variable port1
     port1 = f.readlines()[1]
     # prepare for further processing:
     port1 = port1.split()
     # Print with proper space 
     print " ".join(port1)
     # print eth1 (your input data has no eth0)
     print port1[1]