How to Create a Common Function to Execute a Python Script in Jenkins

Return a list of values from Python Script to Jenkins Pipeline

Since you're using the Pipeline DSL, you can use Groovy to process the result of the call to bat

pipeline {
    agent any
    steps {
        step('Get Build Numbers') {
            script {
                def version_numbers = bat(script: 'python get_version_numbers.py', returnStdout: true)
                def versions_as_array = version_numbers.split('\n')
            }
        }
    }
}

From there, it's a matter of generating the build steps and wrapping them in a parallel block. For that, take a look at this answer: Ideas to implement dynamic parallel build using jenkins pipeline plugin

Get the ouput result for a python script in a Jenkinsfile pipeline groovy

stage('Deployment on FTP') {
        steps {
            script {
                env.WAR_NAME = sh(script: "python scripts-ci/scripts/build/front/scripts/lib/war_name.py ${customerProfileId} ${FORCE_CUSTOMER_NAME}", returnStdout: true).toString().trim()
            }
        }
    }

Here is the code of my current Jenkinsfile working (scripts-ci beeing the folder when I've clone my python scripts needed.

        stage("Git checkout") {
          steps {
            dir("scripts-ci") {
                git branch: "${GIT_BRANCH_CI}",
                credentialsId: "${GIT_CREDENTIALS_ID}",
                url: "${GIT_URL_CI}"
            }
        }
    }

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