[英]Pythonic way to split string then split again on result?
有沒有更Python的方式來做到這一點
def parse_address(hostname, addresses):
netmask=''
for address in addresses:
if hostname in address:
_hostname, _netmask = address.strip().split('/')
hostname = _hostname.split()[-1]
netmask = '/' + _netmask.split()[0]
break
return netmask
如果你做TDD
def test_parse_netmask(self):
hostname = '127.0.0.1'
stdout = [
"1: lo inet 127.0.0.1/8 scope host lo\ valid_lft forever preferred_lft forever",
"3: wlp4s0 inet 192.168.2.133/24 brd 192.168.2.255 scope global dynamic wlp4s0\ valid_lft 58984sec preferred_lft 58984sec",
"4: docker0 inet 172.17.0.1/16 scope global docker0\ valid_lft forever preferred_lft forever",
"5: br-a49026d1a341 inet 172.18.0.1/16 scope global br-a49026d1a341\ valid_lft forever preferred_lft forever",
"6: br-d26f2005f732 inet 172.19.0.1/16 scope global br-d26f2005f732\ valid_lft forever preferred_lft forever",
]
netmask = scanner.parse_address(hostname, stdout)
self.assertEqual(netmask, '/8')
def x(hostname,addresses):
import re
for address in addresses:
result = re.search(hostname+r"/\d", address)
if result:
return result.group(0).split(hostname)[1]
不知道它是否更像“ Pythonic”,但我會這樣做。 它對其他人可讀,但足夠簡短,不會拖累該功能。
import re
hostname = '127.0.0.1'
stdout = [
"1: lo inet 127.0.0.1/8 scope host lo\ valid_lft forever preferred_lft forever",
"3: wlp4s0 inet 192.168.2.133/24 brd 192.168.2.255 scope global dynamic wlp4s0\ valid_lft 58984sec preferred_lft 58984sec",
"4: docker0 inet 172.17.0.1/16 scope global docker0\ valid_lft forever preferred_lft forever",
"5: br-a49026d1a341 inet 172.18.0.1/16 scope global br-a49026d1a341\ valid_lft forever preferred_lft forever",
"6: br-d26f2005f732 inet 172.19.0.1/16 scope global br-d26f2005f732\ valid_lft forever preferred_lft forever",
]
print [item.split('/')[-1] for item in re.findall(r'(?:\d+\.){3}\d+\/\d+',''.join(stdout)) if hostname in item]
['8']
您能基於這樣的代碼嗎?
from urllib.parse import urlparse
parseResult = urlparse('http://www.fake.ca/185')
print ( parseResult )
parseResult是一個結構,其中包含在print語句的輸出中顯示的元素。
ParseResult(scheme ='http',netloc ='www.fake.ca',path ='/ 185',params =“,query =”,fragment =“'')
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