SyntaxWarning: invalid escape sequence '\s'

[simone80an]

I have latest Rundeck OSS 5.8.0 running in a Windows Server 2019 VM, Python version installed 3.13.1 and latest py-winrm-plugin v.2.1.3.

When i execute a Powershell script i made i get SyntaxWarning: invalid escape sequence '\s' in the output.

The script:

if (Get-Service -Name "@option.servizio@") {
$arrService = Get-Service -Name "@option.servizio@"
Restart-Service -Name "@option.servizio@"
write-host 'Restarting service @option.servizio@'

Start-Sleep -seconds 10

$arrService.Refresh()

if ($arrService.Status -eq 'Running')
{
    Write-Host '@option.servizio@ is now running'
} else {
    Write-Host '@option.servizio@ is stopped, notifying...'
    exit 1
}

} else {
    Write-Host "@option.servizio@ service doesn't exists."
}

the option servizio has the following list of allowed values: NETA Schedulatore Amministratore Service,NETABollengWrapperService,Neta Etl Service,NETA Reports Service,NETA OutputFile Service

The output:

C:\rundeck\libext\cache\py-winrm-plugin-2.1.3\common.py:35: SyntaxWarning: invalid escape sequence '\s'
regexpMultipleAbsolutePath = re.compile(''[a-zA-Z]:\\.\s[a-zA-Z]:\\.') #at least two absolute paths
C:\rundeck\libext\cache\py-winrm-plugin-2.1.3\common.py:39: SyntaxWarning: invalid escape sequence '\s'
regexpPathAndOption = re.compile(''[a-zA-Z]:\\.\s/.+')
C:\rundeck\libext\cache\py-winrm-plugin-2.1.3\common.py:43: SyntaxWarning: invalid escape sequence '\s'
regexpPathAndOptionUnix = re.compile(''[a-zA-Z]:\\.\s-.+')
C:\rundeck\libext\cache\py-winrm-plugin-2.1.3\common.py:47: SyntaxWarning: invalid escape sequence '\s'
regexPathRequireQuotes = re.compile(''[a-zA-Z]:\\.*\s')
Riavvio servizio NETABollengWrapperService
NETABollengWrapperService è ora in esecuzione

However the job complete OK and the script does what i expect.

[mshedsilegx]

Yes, I had the same issue. Python 3.13 is stricter about how backslashes are interpreted within regular string literals.
The patch below fixes the problem

--- ./contents/common.py.dist<->2024-01-11 21:30:02.000000000 +0000
+++ ./contents/common.py<------>2025-06-25 04:15:06.346840361 +0000
@@ -32,19 +32,19 @@
.
 def isAPathThatRequiresDoubleQuotes(candidate):
     #first check that this is not multiple paths, e.g. 'C:\windows C:\tmp...'
-    regexpMultipleAbsolutePath = re.compile('\'[a-zA-Z]:\\\\.*\s[a-zA-Z]:\\\\.*') #at least two absolute paths
+    regexpMultipleAbsolutePath = re.compile(r'\'[a-zA-Z]:\\\\.*\s[a-zA-Z]:\\\\.*') #at least two absolute paths
     if regexpMultipleAbsolutePath.match(candidate): return False
.
     #verify if this is a path with no options after, windows style. e.g. 'C:\Windows /w...'
-    regexpPathAndOption = re.compile('\'[a-zA-Z]:\\\\.*\s/.+')
+    regexpPathAndOption = re.compile(r'\'[a-zA-Z]:\\\\.*\s/.+')
     if regexpPathAndOption.match(candidate): return False
.
     #verify if this is a path with no options after, unix style. e.g. 'C:\Windows -v'
-    regexpPathAndOptionUnix = re.compile('\'[a-zA-Z]:\\\\.*\s-.+')
+    regexpPathAndOptionUnix = re.compile(r'\'[a-zA-Z]:\\\\.*\s-.+')
     if regexpPathAndOptionUnix.match(candidate): return False
.
     #finally, check if this is a single path, with single quotes, and requires to be put between double quotes.e.g. 'C:\Program Files'
-    regexPathRequireQuotes = re.compile('\'[a-zA-Z]:\\\\.*\s')
+    regexPathRequireQuotes = re.compile(r'\'[a-zA-Z]:\\\\.*\s')
     if regexPathRequireQuotes.match(candidate):
         return True
     else:

[daniel-chamberland]

Confirmed the suggested fix (using r to interpret the regex as raw string literal) addresses the problem on Ubuntu 24.04 (python 3.12).