查找文件中的字符串

Question

我试图用文件内的已知字符串重命名一个文件。 我可以从搜索文件的输出中得到我想要的信息。如果它有额外的回车，我无法获得我所掌握的信息。这里是代码：

>>> with open('c:/test/277coreB.txt', 'r') as config: 
...  for line in config: 
...   if "hostname" in line: 
...      host = line 
...  #This is where the extra carriage return come from and I cannot get rid of it 
>>> print host[9:] 
XR77-2-DC-Core-B 

Answer 1

str.rstrip('\n')将摆脱尾随的换行符。