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About Luca Berton

Luca Berton is an Ansible automation expert, author of 8 Ansible books published by Apress and Leanpub including "Ansible for VMware by Examples" and "Ansible for Kubernetes by Example", and creator of the Ansible Pilot YouTube channel. He shares practical automation knowledge through tutorials, books, and video courses to help IT professionals and DevOps engineers master infrastructure automation.

Ansible Run Python Scripts: Execute & Manage Python on Remote Hosts

By Luca Berton · Published 2024-01-01 · Category: installation

How to run Python scripts with Ansible on remote hosts. Use command, script, and shell modules to execute Python code and handle output with examples.

Ansible is a versatile automation tool that can run Python scripts on target systems, making it a valuable resource for managing Python-based workflows and tasks. This article explores how Ansible can execute Python scripts, its requirements, and best practices for integrating Python into your automation pipelines.

Can Ansible Run Python Scripts?

Yes, Ansible can execute Python scripts on target systems using modules like script, command, or shell. By leveraging these modules, you can deploy, execute, and manage Python scripts efficiently.

Key Features:

  • Cross-Platform Compatibility: Run Python scripts on Linux, Windows, and other platforms.
  • Integration with Workflows: Combine Python scripts with Ansible tasks for end-to-end automation.
  • Dynamic Execution: Pass arguments or environment variables to scripts during execution.

How to Run Python Scripts with Ansible

1. Using the script Module

The script module is designed to transfer and execute scripts on remote hosts.

Example:

- name: Execute Python script
  hosts: all
  tasks:
    - name: Run Python script
      ansible.builtin.script: /path/to/script.py

In this example:

  • The Python script is transferred to the target system and executed.
  • The output of the script is captured for debugging or further use.

2. Using the command Module

The command module executes commands directly on the target system.

Example:

- name: Run Python script with command module
  hosts: all
  tasks:
    - name: Execute Python script
      ansible.builtin.command:
        cmd: python3 /path/to/script.py

3. Using the shell Module

The shell module provides more flexibility by allowing environment variables or shell-specific features.

Example:

- name: Run Python script with environment variables
  hosts: all
  tasks:
    - name: Execute Python script with arguments
      ansible.builtin.shell: python3 /path/to/script.py --arg1 value1
      environment:
        ENV_VAR: "example_value"

4. Passing Arguments to Python Scripts

You can pass arguments directly to the script: 
- name: Run Python script with arguments
  hosts: all
  tasks:
    - name: Execute script with arguments
      ansible.builtin.command:
        cmd: python3 /path/to/script.py arg1 arg2

See also: Project Policy Validation with OPA and ansible-policy

Deploying and Executing Python Scripts

If the script is not present on the target system, use the copy module to transfer it before execution.

Example:

- name: Deploy and run Python script
  hosts: all
  tasks:
    - name: Copy Python script to target
      copy:
        src: /local/path/to/script.py
        dest: /remote/path/script.py
        mode: '0755'

    - name: Execute Python script
      shell: python3 /remote/path/script.py

Capturing Script Output

Use the register keyword to capture the output of a Python script: 

- name: Capture script output
  hosts: all
  tasks:
    - name: Run Python script
      command: python3 /path/to/script.py
      register: script_output

    - name: Display script output
      debug:
        var: script_output.stdout

See also: Ansible vs Terraform: Key Differences & When to Use Each (2026 Guide)

Best Practices for Running Python Scripts with Ansible

  1. Validate Scripts:
Test Python scripts independently before integrating them into Ansible playbooks.
  1. Secure Sensitive Data:
Use Ansible Vault to encrypt credentials or sensitive information passed to scripts.
  1. Organize Scripts:
Store scripts in a centralized scripts/ directory within your project.
  1. Use Virtual Environments:
Activate Python virtual environments in your playbooks for dependency isolation.

Example: 

   - name: Run script in virtual environment
     shell: source /path/to/venv/bin/activate && python script.py

  1. Monitor Execution:
Capture logs and outputs to troubleshoot issues effectively.

Use Cases for Ansible and Python Scripts

  1. Data Processing:
Automate data collection, transformation, and reporting workflows.
  1. Application Deployment:
Deploy and manage Python-based applications or APIs.
  1. Infrastructure Management:
Combine Python scripts with Ansible to manage infrastructure resources dynamically.
  1. Custom Automation:
Run custom scripts to handle specific operational tasks.

See also: Ansible vs Terraform: Are They the Same? Key Differences Explained (2026)

Conclusion

Ansible provides robust support for executing Python scripts, making it a valuable tool for integrating custom automation and workflows. By leveraging modules like script, command, or shell, you can efficiently deploy and manage Python-based tasks across your infrastructure.

Learn More About Running Python Scripts with Ansible

Run Local Script on Remote Host

# script module copies and executes in one step
- name: Run Python script
  ansible.builtin.script: files/setup.py
  args:
    executable: python3

Run Remote Script

- name: Execute Python on remote
  ansible.builtin.command:
    cmd: python3 /opt/scripts/process_data.py
  register: result

- debug: var=result.stdout

Run with Arguments

- ansible.builtin.command:
    cmd: "python3 /opt/scripts/deploy.py --env production --version {{ app_version }}"
  register: deploy_result

Run Inline Python

- ansible.builtin.shell: |
    python3 -c "
    import json
    data = {'hostname': '{{ inventory_hostname }}', 'ip': '{{ ansible_host }}'}
    print(json.dumps(data))
    "
  register: output

- set_fact:
    host_data: "{{ output.stdout | from_json }}"

Deploy and Run Script

- name: Deploy script
  ansible.builtin.copy:
    src: files/process.py
    dest: /opt/scripts/process.py
    mode: '0755'
  become: true

- name: Install dependencies
  ansible.builtin.pip:
    requirements: /opt/scripts/requirements.txt
    virtualenv: /opt/scripts/venv
  become: true

- name: Run with virtualenv
  ansible.builtin.command:
    cmd: /opt/scripts/venv/bin/python /opt/scripts/process.py
  register: result

Capture and Parse Output

- name: Run Python data processor
  ansible.builtin.command:
    cmd: python3 /opt/scripts/get_stats.py --format json
  register: stats_raw

- set_fact:
    stats: "{{ stats_raw.stdout | from_json }}"

- debug:
    msg: "CPU: {{ stats.cpu_percent }}%, Memory: {{ stats.memory_percent }}%"

Run in Virtual Environment

- ansible.builtin.command:
    cmd: "{{ venv_path }}/bin/python {{ script_path }}"
  environment:
    VIRTUAL_ENV: "{{ venv_path }}"
    PATH: "{{ venv_path }}/bin:{{ ansible_env.PATH }}"

Error Handling

- ansible.builtin.command:
    cmd: python3 /opt/scripts/validate.py
  register: validation
  failed_when: validation.rc != 0
  changed_when: "'changes made' in validation.stdout"

- debug:
    msg: "Validation failed: {{ validation.stderr }}"
  when: validation.rc != 0

script vs command vs shell

ModuleSourceShellUse Case
scriptControllerNoRun local .py on remote
commandRemoteNoRun remote .py (safe)
shellRemoteYesPipes, redirects, inline

FAQ

script module — does it install Python?

No. Python must already be on the remote host. The script module copies and executes your file.

How do I pass Ansible variables to Python?

Via arguments: python3 script.py --name {{ var }} Via environment: environment: { MY_VAR: "{{ var }}" } Via stdin: shell: echo '{{ data | to_json }}' | python3 script.py

Can I use pip module instead of running scripts?

For package management, use ansible.builtin.pip. For custom logic, run scripts.

Run Remote Python Script

- ansible.builtin.command: python3 /opt/scripts/process-data.py
  register: result

- debug:
    msg: "{{ result.stdout }}"

Run Local Script on Remote Host

# Copies local script to remote, executes, then removes
- ansible.builtin.script: scripts/setup.py
  args:
    executable: python3
  register: output

Inline Python

- shell: |
    python3 -c "
    import json
    data = {'status': 'ok', 'count': 42}
    print(json.dumps(data))
    "
  register: result

- set_fact:
    parsed: "{{ result.stdout | from_json }}"

Python with Arguments

- command: >
    python3 /opt/scripts/deploy.py
    --environment {{ env }}
    --version {{ app_version }}
    --config /etc/myapp/config.yml
  register: deploy_result

Python with Virtual Environment

# Create venv and install deps
- pip:
    requirements: /opt/myapp/requirements.txt
    virtualenv: /opt/myapp/venv
    virtualenv_command: python3 -m venv

# Run with venv
- command: /opt/myapp/venv/bin/python /opt/myapp/main.py

Capture JSON Output

- command: python3 /opt/scripts/inventory.py
  register: inventory_raw

- set_fact:
    inventory_data: "{{ inventory_raw.stdout | from_json }}"

- debug:
    msg: "Found {{ inventory_data.servers | length }} servers"

Error Handling

- command: python3 /opt/scripts/validate.py
  register: validation
  failed_when: validation.rc != 0
  changed_when: "'CHANGED' in validation.stdout"

- debug:
    msg: "Validation: {{ validation.stdout }}"
  when: validation.rc == 0

Deploy and Run Pattern

- name: Deploy Python script
  copy:
    src: scripts/process.py
    dest: /opt/scripts/process.py
    mode: '0755'
  become: true

- name: Install dependencies
  pip:
    name: [requests, pyyaml]
    state: present
  become: true

- name: Execute script
  command: python3 /opt/scripts/process.py
  register: result
  environment:
    API_KEY: "{{ vault_api_key }}"
  no_log: true

Python One-Liners

# Check Python version
- command: python3 --version
  register: py_version

# Generate random string
- shell: python3 -c "import secrets; print(secrets.token_hex(16))"
  register: random_token

# Parse YAML
- shell: python3 -c "import yaml; print(yaml.safe_load(open('/etc/config.yml'))['key'])"
  register: config_value

FAQ

command vs shell for Python scripts?

Use command for simple script execution. Use shell if you need pipes, redirects, or environment variable expansion.

Do I need Python on the remote host?

Yes — Ansible itself requires Python on managed nodes. Your scripts can use the same Python installation.

How to pass secrets to Python scripts?

Use environment parameter with no_log: true, or write to a temp file and clean up after.

Category: installation

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