Python SDK 参考与命令

python3 -m venv .venv
source .venv/bin/activate
python -m pip install --upgrade pip
# Install the GPU-compatible PyTorch build for your runtime first.
python -m pip install 'fusionpointai-training[train] @ https://fusionpointai.com/downloads/fusionpointai-training.zip'
# API-only use without local training dependencies:
# python -m pip install 'fusionpointai-training @ https://fusionpointai.com/downloads/fusionpointai-training.zip'

import os
from fusionpointai_training import TrainingClient

client = TrainingClient(
    api_key=os.environ["FUSIONPOINTAI_API_KEY"],
    base_url="https://fusionpointai.com/api/v1/training",
    timeout=60.0,
    max_get_retries=2,
)
# transport optionally accepts an httpx transport for controlled integrations.
# Never enable insecure remote HTTP to work around a TLS error.

from importlib.metadata import PackageNotFoundError, version
from importlib.util import find_spec

for package in ("fusionpointai-training", "httpx", "torch", "transformers", "peft"):
    try:
        print(f"{package}=={version(package)}")
    except PackageNotFoundError:
        print(f"{package}: not installed")

for module in ("torch", "transformers", "peft", "safetensors"):
    print(f"{module} importable:", find_spec(module) is not None)
# The train extra includes optional model-training dependencies; inspect before use.

from fusionpointai_training.client import DatasetManifest

# Continue with an authenticated client and an owned session.
ready = client.prepare_session(session["id"])
for item in ready["datasets"]:
    manifest = DatasetManifest(
        split=item["split"], sha256=item["sha256"],
        bytes=item["bytes"], rows=item["rows"],
    )
    rows = client.download_dataset(ready["id"], manifest)
    print(manifest.split, len(rows), manifest.sha256)
    # Each row has a text field. Do not log private training content.

# For a genuine external trainer integration, not simulated progress.
def report_progress(client, session_id, *, step, total_steps, loss):
    return client.post_event(session_id, {
        "state": "running",
        "step": step,
        "total_steps": total_steps,
        "metrics": {"loss": loss},
    })
# Supply values observed from your real trainer.
# The built-in train() already reports its progress; do not duplicate it.

import json
from pathlib import Path

# Continue with client/session. Inspect state before retrying reporting.
report = json.loads(Path("customer-model-run-001/training-report.json").read_text())
state = client.get_session(session["id"])
if state["status"] == "evaluating":
    state = client.complete(session["id"], report["completion_report"])
print(state["status"])
# Do not restart weight training just to reconcile reporting.

import os
from fusionpointai_training import TrainingClient

client = TrainingClient(api_key=os.environ["FUSIONPOINTAI_API_KEY"])
session = client.get_session(os.environ["FUSIONPOINTAI_SESSION_ID"])
report = session.get("report")
last_event = report.get("last_event", {}) if isinstance(report, dict) else {}
print("State:", session["status"], "Step:", session["step"])
print("Last reported error code:", last_event.get("error_code"))
# A missing error_code does not prove success. Read state and your local report.
# Do not dump full provider responses, private data or authorization headers.

import os
from fusionpointai_training import TrainingClient
from fusionpointai_training.errors import APIError, IntegrityError, TrainingError

client = TrainingClient(api_key=os.environ["FUSIONPOINTAI_API_KEY"])
try:
    state = client.get_session(os.environ["FUSIONPOINTAI_SESSION_ID"])
    print("Current state:", state["status"])
except IntegrityError:
    print("Integrity check failed; preserve the report and investigate.")
except TrainingError:
    print("Training failed; inspect the local report before retrying.")
except APIError:
    print("Request failed; inspect access and session state before another write.")
except ValueError:
    print("Invalid local configuration; correct the input before retrying.")
# Never print the key or authorization headers.

import os
from fusionpointai_training import TrainingClient
from fusionpointai_training.errors import APIError

client = TrainingClient(
    api_key=os.environ["FUSIONPOINTAI_API_KEY"],
    timeout=30.0,
    max_get_retries=2,
)
try:
    session = client.get_session(os.environ["FUSIONPOINTAI_SESSION_ID"])
except APIError:
    # GET retries are bounded. Do not blindly retry a write after an error.
    print("Session inspection failed; check access and current server state.")
else:
    print("Status:", session["status"])
# Never print the API key, authorization headers, or response secrets.