python 解析 yaml文件

import yaml

with open("./test.yaml") as f:
    x = yaml.load(f)

print(x)

[{'tasks': [{'yum': {'state': 'latest', 'name': 'httpd'}, 'name': 'ensure apache is at the latest version'}, {'name': 'write the apache config file', 'template': {'dest': '/etc/httpd.conf', 'src': '/srv/httpd.j2'}, 'notify': ['restart apache']}, {'name': 'ensure apache is running', 'service': {'state': 'started', 'name': 'httpd'}}], 'hosts': 'webservers', 'remote_user': 'root', 'vars': {'http_port': 80, 'max_clients': 200}, 'handlers': [{'name': 'restart apache', 'service': {'state': 'restarted', 'name': 'httpd'}}]}]

test.yaml

---
- hosts: webservers
  vars:
    http_port: 80
    max_clients: 200
  remote_user: root
  tasks:
  - name: ensure apache is at the latest version
    yum:
      name: httpd
      state: latest
  - name: write the apache config file
    template:
      src: /srv/httpd.j2
      dest: /etc/httpd.conf
    notify:
    - restart apache
  - name: ensure apache is running
    service:
      name: httpd
      state: started
  handlers:
    - name: restart apache
      service:
        name: httpd
        state: restarted

-----------------------------------------------------------------

import yaml

d = [{'tasks': [{'yum': {'state': 'latest', 'name': 'httpd'}, 'name': 'ensure apache is at the latest version'}, {'name': 'write the apache config file', 'template': {'dest': '/etc/httpd.conf', 'src': '/srv/httpd.j2'}, 'notify': ['restart apache']}, {'name': 'ensure apache is running', 'service': {'state': 'started', 'name': 'httpd'}}], 'hosts': 'webservers', 'remote_user': 'root', 'vars': {'http_port': 80, 'max_clients': 200}, 'handlers': [{'name': 'restart apache', 'service': {'state': 'restarted', 'name': 'httpd'}}]}]

with open("./test.yaml","w") as f:
    yaml.dump(d,f)

test.yaml

- handlers:
  - name: restart apache
    service: {name: httpd, state: restarted}
  hosts: webservers
  remote_user: root
  tasks:
  - name: ensure apache is at the latest version
    yum: {name: httpd, state: latest}
  - name: write the apache config file
    notify: [restart apache]
    template: {dest: /etc/httpd.conf, src: /srv/httpd.j2}
  - name: ensure apache is running
    service: {name: httpd, state: started}
  vars: {http_port: 80, max_clients: 200}