如何提取MAC ID?

时间:2019-03-29 07:07:08

标签: python regex string

我需要从一组相关命令中提取MAC id。

从第一个命令中,在第二个命令中应用括号eth-1(2-04)中的值(2,4),以从第二个命令的输出中提取MAC id。

如何在第二个命令的输出中提取与2 4在同一行的MAC id?

s1 = '''100 int-maint      debug(2-02) eth-10(2-00) maint(4-03)
101 bear-test      eth-1(2-04) eth-2(2-07)
102 int-test      eth-4(2-06) eth-7(2-05) eth-8(2-03) eth-9(2-01) gig-3(2-08) eth-3(4-02) eth-5(4-00) eth-6(4-01) gig-1(4-08) gig-2(4-10) poe-1(4-04) poe-2(4-05) poe-3(4-06) poe-4(4-07)
'''
# output of second command

r2 = '''
     2     4   101  00:80:a3:bf:72:d4      5
     2    10   101  00:e0:4b:52:56:56      7
     2    10   100  02:00:00:64:00:00      7
     2    10   102  02:00:00:66:00:00      6
     2     0   100  94:10:3e:b9:4f:5c      2
Switch  Port   FID      MAC-Address    Aging
     4     3   100  56:1a:5e:a2:4a:73      7
'''


import re
s1o = (next((x for x in s1.split() if 'eth-1(2-04)' in x), None))
print(s1o)
print(r2.split())

我到目前为止的输出(如下所示)。我不确定split()是否是将其分解以提取此值的最佳方法00:80:a3:bf:72:d4

eth-1(2-04)
['2', '4', '101', '00:80:a3:bf:72:d4', '5', '2', '10', '101', '00:e0:4b:52:56:56', '7', '2', '10', '100', '02:00:00:64:00:00', '7', '2', '10', '102', '02:00:00:66:00:00', '6', '2', '0', '100', '94:10:3e:b9:4f:5c', '2', 'Switch', 'Port', 'FID', 'MAC-Address', 'Aging', '4', '3', '100', '56:1a:5e:a2:4a:73', '7']

预期结果:00:80:a3:bf:72:d4

2 个答案:

答案 0 :(得分:1)

我也是python初学者,我认为这段代码对您有帮助

101 bear-test      eth-1(2-04) eth-2(2-07)
102 int-test      eth-4(2-06) eth-7(2-05) eth-8(2-03) eth-9(2-01) gig-3(2-08) eth-3(4-02) eth-5(4-00) eth-6(4-01) gig-1(4-08) gig-2(4-10) poe-1(4-04) poe-2(4-05) poe-3(4-06) poe-4(4-07)
'''
# output of second command

r2 = '''
     2     4   101  00:80:a3:bf:72:d4      5
     2    10   101  00:e0:4b:52:56:56      7
     2    10   100  02:00:00:64:00:00      7
     2    10   102  02:00:00:66:00:00      6
     2     0   100  94:10:3e:b9:4f:5c      2
Switch  Port   FID      MAC-Address    Aging
     4     3   100  56:1a:5e:a2:4a:73      7
'''


import re
s1o = (next((x for x in s1.split() if 'eth-1(2-04)' in x), None))
print(s1o)
base_list=(r2.split())
base_str=",".join(base_list)
pattren=r"(\w{2}):(\w{2}):(\w{2}):(\w{2}):(\w{2}):(\w{2})"
all_mac=re.findall(pattren,base_str)
print(all_mac)
print('###########################################')
for i in all_mac:
    result=re.sub(",",":",str(i))
    print(result)

答案 1 :(得分:0)

对于第一个命令,您可以应用此模式eth-1\((\d)-0(\d)

eth-1\( =从字面上匹配eth-1(

(\d)-匹配数字并将其存储在第一个捕获组中

-0-从字面上匹配-0

(\d)-匹配数字并将其存储在第二个捕获组中

Demo

现在,您可以创建另一个正则表达式以应用于第二个命令:2\s+4\s+\d+\s+([^\s]+)

2-从字面上匹配2,这是来自第一个正则表达式的第一个捕获组

\s+-匹配一个或多个空格

4-从字面上匹配4,这是来自第一个正则表达式的第二个捕获组

\s+-匹配一个或多个空格

\d+-匹配一个或多个数字

\s+-匹配一个或多个空格

([^\s]+)-匹配空格以外的一个或多个字符并将其存储在捕获组中,这将捕获您的mac地址

Demo