import os
from qaip import Qaip

client = Qaip(
    api_key=os.environ.get("QAIP_API_KEY"),  # This is the default and can be omitted
)
tag_source_group = client.tag_source_groups.create(
    source_group_id="source_group_id",
    tag_id="tag_id",
)
print(tag_source_group.source_group_id)

{
  "tag_id": "<string>",
  "source_group_id": "<string>"
}