import os
from gcore import Gcore

client = Gcore(
    api_key=os.environ.get("GCORE_API_KEY"),  # This is the default and can be omitted
)
placement_group = client.cloud.placement_groups.get(
    group_id="group_id",
    project_id=0,
    region_id=0,
)
print(placement_group.project_id)

{
  "instances": [
    {
      "instance_id": "<string>",
      "instance_name": "<string>"
    }
  ],
  "name": "<string>",
  "policy": "<string>",
  "project_id": 123,
  "region": "<string>",
  "region_id": 123,
  "servergroup_id": "<string>"
}