CODEWITHSUNDEEP
pythonregex
Fayez Al Sedlah
Fayez Al Sedlah

Reputation: 33

Stop after first match

I'm trying to split services' name and their status with Regex.

This works fine: 

message = "svnserve is stopped"
match = re.search(r"(.*)\s+is\s+(\w*)", message)
print match.group(1),match.group(2)
# output=> svnserve stopped

but when I found line like this it doesn't work:

message = "openssh-daemon (pid  1982) is running"
match = re.search(r"(.*)\s+is\s+(\w*)", message)
print match.group(1),match.group(2)
# output => openssh-daemon (pid  1982) running

How I can remove the (pid 1982); I just want the name and the state.

Any help?

Upvotes: 1

Views: 1888

Answers (3)

sakurashinken
sakurashinken

Reputation: 4080

re.search(r"(.*)\s+is\s+(\w*)",str)

This regex takes anything up to the first space as its first group, then matches the word "is" with an unspecified number of spaces on either side, then takes an alpha numeric character string after that as its next group. This second group includes spaces. A better strategy would be to take the first and last word, separated by spaces. Try

 match = re.search(r"^([\S]+).*\s([\S]+)$",str)

Upvotes: 0

Avinash Raj
Avinash Raj

Reputation: 174696

You could use re.findall function to do a global match. \S+ matches one or more non-space characters.

>>> m = re.findall(r'^\S+|\S+$', message)
>>> print(m[0],m[1])
svnserve stopped
>>> message = "openssh-daemon (pid  1982) is running"
>>> m = re.findall(r'^\S+|\S+$', message)
>>> print(m[0],m[1])
openssh-daemon running

OR

If you want to fed \s+is\s+ into your regex then try the below.

>>> message = "openssh-daemon (pid  1982) is running"
>>> m = re.search(r'^(\S+).*?\s+is\s+.*?(\S+)$', message)
>>> print(m.group(1),m.group(2))
openssh-daemon running

Or you could simply use re.search(r'^(\S+).*?(\S+)$', message)

Upvotes: 1

user2555451
user2555451

Reputation:

The service name will always be the first word in the string and its state will always be the last. So, you can simply split the string and grab these two items directly:

message = "svnserve is stopped"
match = message.split()
print match[0], match[-1]

Demo:

>>> message = "svnserve is stopped"
>>> match = message.split()
>>> print match[0], match[-1]
svnserve stopped
>>>
>>> message = "openssh-daemon (pid  1982) is running"
>>> match = message.split()
>>> print match[0], match[-1]
openssh-daemon running
>>>

Upvotes: 1

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