如何根据提供的变量在不同的主机或一组主机上运行ansible playbook？

#!/usr/bin/env python

import json

# 根据提供的变量生成主机清单
def generate_inventory(variable):
    if variable == "dev":
        inventory = {
            "web_servers": {
                "hosts": ["web1.example.com", "web2.example.com"],
                "vars": {
                    "http_port": 80,
                    "max_connections": 100
                }
            },
            "db_servers": {
                "hosts": ["db1.example.com", "db2.example.com"],
                "vars": {
                    "db_port": 3306,
                    "max_connections": 200
                }
            }
        }
    elif variable == "prod":
        inventory = {
            "web_servers": {
                "hosts": ["web3.example.com", "web4.example.com"],
                "vars": {
                    "http_port": 8080,
                    "max_connections": 200
                }
            },
            "db_servers": {
                "hosts": ["db3.example.com", "db4.example.com"],
                "vars": {
                    "db_port": 5432,
                    "max_connections": 500
                }
            }
        }
    else:
        inventory = {}

    return json.dumps(inventory)

# 打印生成的主机清单
print(generate_inventory("dev"))

---
- name: Example playbook
  hosts: all
  gather_facts: false
  tasks:
    - name: Print variable
      debug:
        var: inventory_hostname

ansible-playbook -i dynamic_inventory.py site.yml --extra-vars "variable=dev"