Run Python Script In Jenkins

Steps
Description
Python Code Examples




Step 1: Installation
You need to have Jenkins installed in your system. If it's not already installed, download and install it.
N/A


Step 2: Set up Jenkins Job
In your Jenkins dashboard, create a new job for running your Python script.
N/A


Step 3: Configure Build Step
Add a build step "Execute Python script" to your Jenkins Job.
N/A


Step 4: Script Execution
Input your python script in the provided text box. Alternatively, use "Execute shell" or "Execute Windows batch command" if the script is standalone and executable.
print('Hello Jenkins')


Step 5: Build and View Output
Save the changes, then hit "Build Now". Once the build finishes, click on Console Output to view the results.
N/A

Running a Python script in Jenkins is as simple as following this diagrammed plan. It starts with setting up Jenkins, followed by configuring an appropriate job for your Python script. The next phase involves adding a build step called “Execute Python script”, where the Python code is defined or the standalone script is targeted using “Execute shell” or “Execute windows batch command”. Finally, the last step is to build and see your output. Following these steps systematically ensures a successful outcome, with Jenkins managing and automating the continuous integration and delivery of your Python scripts. For more details, always refer to the official Jenkins documentation.In the world of DevOps, Jenkins is an open-source automation server that enables developers to build, test, and deploy their applications with continuous integration and continuous delivery (CI/CD). It has a comprehensive ecosystem that supports a vast number of plugins, making it super versatile.

To set up Jenkins, download the latest stable version from the official [Jenkins website](https://www.jenkins.io/download/). Follow the installation instructions that are suitable for your operating system.

Afterward, start your Jenkins server. The typical way to do this is to run the command:

java -jar jenkins.war 

You should now be able to access Jenkins by typing localhost:8080 in your web browser. Complete the setup by following the prompts displayed on the screen.

For Jenkins to integrate with Python and execute scripts, you may need to install the ShiningPanda plugin. This is done in the Manage Jenkins -> Manage Plugins option in your Jenkins server.

Use these steps to configure installed Python interpreters:

– Navigate to Manage Jenkins -> Configure System.
– Find the Python section.
– Click on Add Python.
– Fill in the necessary information such as Name and Python home (the path where Python interpreter is installed).
– Save your config.

Now let’s jump into running a Python script in Jenkins. We’ll make use of Jenkins’ jobs and pipelines to achieve this. Below are step-by-step guidelines:

1. First, create a new Freestyle project or Pipeline depending on your needs. You can do this via the New Item option on Jenkins’ dashboard. Type the item name and click on Freestyle project or Pipeline, then click OK.

2. If you chose Freestyle project, navigate to the Build section after configuring the other settings. Here, select Execute Python script from the Add Build Step dropdown. Then enter your Python code in the provided text box. For example, you could have something like:

print('Hello from Python')

3. However, if you selected Pipeline, under the pipeline definition, choose Pipeline script and provide your Python code in the form of a Jenkinsfile. An example looks like:

node { // Allocates the workflow as a job in Jenkins
       sh 'echo "Running python script"'
       stage ('First step') {
           sh '''python3 -c "print('Hello from Python')"'''
      }
   }

4. Once you’ve added your Python script, save your project.

5. To run your Python code inside the Jenkins environment, simply build your project. Use the Build Now button to trigger execution.

With those steps, you can enjoy flexibility, easy debugging, and efficient iteration of your codebase thanks to Jenkins’ powerful integration with Python.Setting up the Python environment in Jenkins is a key preparatory phase before you can run your python scripts. Jenkins, which is an open-source automation tool written in Java, makes it possible to implement Continuous Integration (CI) and Continuous Delivery (CD) methodologies in your projects. By learning how to run Python scripts in Jenkins, you harness the power to automate various tasks related to your development process. Below are detailed steps on how you can achieve this:

Firstly, ensure that both Jenkins and Python are installed in your system. If you don’t have them already, consider downloading and installing from their official page, i.e., [Python] and [Jenkins].

Next, we need to configure both of these tools to work together effectively. Interaction between Jenkins and Python involves multiple processes:

1. Configure Python in Jenkins: This process assumes that you’ve completed Jenkins’ installation, and it’s running.

– Login into your Jenkins account.

    localhost:8080
   

– Go to “Manage Jenkins” then “Global Tool Configuration”.
– Scroll down to find the “Python” dropdown menu and click “Python installations”.
Type in Name as ‘Python’ and then fill in the ‘PATH_TO_PYTHON’ corresponding to your local machine’s python path.

2. Create Jenkins Job: Now that Jenkins is aware that it can use Python, it’s time to create a new Jenkins job.

– Click ‘new item’ on the Jenkins dashboard home.
– Specify your project name, e.g., ‘Python_Test’, choose ‘Freestyle project’, and click OK.
– In the configuration system, scroll down to the Build section and click on Add build step > Execute Windows batch command (or Execute shell for MacOS/Linux users).

3. Execute Python Code: Here’s how you can run the Python code:

In the command input field, type:

    python HelloWorld.py

The above command will execute the python script named ‘HelloWorld.py’. Of course, replace ‘HelloWorld.py’ with your script’s actual file name.

Finally, save the job and click the ‘Build Now’ option which appears when you navigate back to your project main settings. Your job should successfully execute the python code if everything was set up right.

Incorporating Jenkins and Python enhances automation while refining the developer experience. By setting up Python environment in Jenkins, you’ll be able to achieve more consistent builds and more efficient workflows, allowing for more scalable developments.Creating a new build job for Python scripts in Jenkins revolves around setting up a Freestyle project and configuring it to execute the Python script. The essential steps include installing the necessary plugins, creating a new Freestyle project, and establishing a shell or batch command.

Let’s walk you step-by-step through this task:

1. Install Necessary Plugins

The first step is to install any needed plugins in Jenkins including the ShiningPanda plugin which can be so helpful in running Python scripts. To kick off, proceed to the Manage Jenkins > Manage Plugins section.

2. Create New Jenkins Job

Next, we’ll start a new Jenkins job. This involves setting up a new job by choosing “New Item” button in Jenkins, assigning a unique name to this job, and then selecting the freestyle project option.