我写Jenkinsfile是一个新手，我有两个Python脚本，它们接受输入并返回值，我想在Jenkins管道中执行。
我应该如何在Jenkinsfile中调用Python脚本？
下面是编写在脚本化Jenkinsfile中的预期Pipeline流程：

node {
    stage('Code Test Run') {
        //Test runs and completes and produce result in XML format.
    }
    stage('Parse XML') {
        //**Python script 1 takes the XML from file directory as input and parse the XML. Returns parsed XML.**
    }
    stage('Publish to website') {
        //**Python script 2 takes returned value from Python script 2 as input and makes API call. Returns status of API call.**
    }
}