[Tutor] manipulating a string in python

[Albert-Jan Roskam]

<snip>
'
>
>import re
>media_re = re.compile(r'(auto|10+T-[HF]D)')
>
>instr = """tmsh list net interface 1.1 media-capa \rbilities\nnet 
>interface 1.1
>{\n    media-capabilities {\n        none\n        auto\n        10T-FD\n
>10T-HD\n        100TX-FD\n        100TX-HD\n        1000T-FD\n
>1000T-HD\n    }\n}\n"""
>
>print [ x.strip() for x in instr.split() if media_re.match(x) ]
>
>
>gives:
>['auto', '10T-FD', '10T-HD', '1000T-FD', '1000T-HD']

slightly more readable:

print re.findall(r'(auto|10+T-[HF]D)', instr)
gives:
['auto', '10T-FD', '10T-HD', '1000T-FD', '1000T-HD']

Not relevant here, but really neat (I recently discovered this by accident): if you have groups in your regex, re.findall turns them into a list of tuples.



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