Robot Framework Match Regexp returns nothing-CodePudding

The script is supposed to get the ip address from the websites given in a txt file. The script works as supposed to up until the Match Regexp part. The Regex itself works as intended when the same code is written in Python.

*** Variables ***
${ipregex}    (\d ).(\d ).(\d ).(\d )

*** Test Cases ***
Ping Test
  ${filep}=  Get File   webpages.txt
  @{lines}=   Split To Lines  ${filep}
  FOR   ${line}   IN  @{lines}
    ${output}=  Run   ping ${line} -c 1
    ${result}=  Get Regexp Matches  ${output}  ${ipregex}  partial_match=true
    Log   ${result}
  END

I Appreciate any help!

The empty return

CodePudding user response：

You need to escape the backslash character with another backslash, see the documentation. this example should produce the match you are looking for:

*** Settings ***
Library    String

***Variables***
${output}    PING wh46.go-vip.net (192.0.66.168): 56 data bytes 64 bytes from 192.0.66.168: icmp_seq=0 ttl=54 time=26.800 ms
${ipregex}    ((25[0-5]|(2[0-4]|1\\d|[1-9]|)\\d)\\.?\\b){4}

*** Test Cases ***
test
    ${result}=    Get Regexp Matches    ${output}    ${ipregex}
    Log    ${result}