python - 如何使用 Python 查找列中的文本

Question

如果我在变量中包含以下文本，那么能够使用 "NetName:" 进行搜索并获取 "LVLT-GOGL-8-8- 的最佳方式是什么？ 8" 返回？

NetRange:       8.8.8.0 - 8.8.8.255

CIDR:           8.8.8.0/24

NetName:        LVLT-GOGL-8-8-8

NetHandle:      NET-8-8-8-0-1

Parent:         LVLT-ORG-8-8 (NET-8-0-0-0-1)

NetType:        Reallocated

NetType:        Reallocated

OriginAS:  

Organization:   Google Inc. (GOGL)

RegDate:        2014-03-14

Updated:        2014-03-14

Ref:            http://whois.arin.net/rest/net/NET-8-8-8-0-1

Answer 1

您可以使用正则表达式，在本例中 re.search可以完成这项工作:

>>> s="""NetRange:       8.8.8.0 - 8.8.8.255
... 
... CIDR:           8.8.8.0/24
... 
... NetName:        LVLT-GOGL-8-8-8
... 
... NetHandle:      NET-8-8-8-0-1
... 
... Parent:         LVLT-ORG-8-8 (NET-8-0-0-0-1)
... 
... NetType:        Reallocated
... 
... NetType:        Reallocated
... 
... OriginAS:  
... 
... Organization:   Google Inc. (GOGL)
... 
... RegDate:        2014-03-14
... 
... Updated:        2014-03-14
... 
... Ref:            http://whois.arin.net/rest/net/NET-8-8-8-0-1"""
>>> import re

>>> re.search(r'NetName:\s+(.*)',s).group(1)
'LVLT-GOGL-8-8-8'

或者您可以循环分割的字符串并使用生成器表达式:

>>> next(line.split()[-1] for line in s.split('\n') if 'NetName:' in line)
'LVLT-GOGL-8-8-8'