如何使用Python跳过文件中的2行？

Question

我有一系列文件,我想从每个文件中提取一个特定的数字.在每个文件中我都有这一行:

name, registration num

并且正好有两行后面有注册号.我想从每个文件中提取这个数字.并把它作为一个字典的值.任何人都知道它是如何可能的？

我当前没有实际工作的代码如下所示:

matches=[]
for root, dirnames, filenames in os.walk('D:/Dataset2'):  
    for filename in fnmatch.filter(filenames, '*.txt'):   
        matches.append([root, filename])

filenames_list={}       
for root,filename in matches:
    filename_key = (os.path.join(filename).strip()).split('.',1)[0]

    fullfilename = os.path.join(root, filename)
    f= open(fullfilename, 'r')
    for line in f:
        if "<name, registration num'" in line:
            key=filename_key
            line+=2
            val=line

Answer 1

我通常next()在我想跳过一行时使用,通常是文件的标题.

with open(file_path) as f:
    next(f) # skip 1 line
    next(f) # skip another one.
    for line in f:
        pass # now you can keep reading as if there was no first or second line.

注意:在Python 2.6或更早版本中,您必须使用 f.next()