code: def gen_commit(commit_hash):
      feature_item = get_commit_data_cache().get(commit_hash)
      features = features_to_dict(feature_item)
      category, topic = CommitList.categorize(features)
      a1, a2, a3 = (features["accepters"] + ("", "", ""))[:3]
      if features["pr_number"] is not None:
          pr_link = f"https://github.com/pytorch/pytorch/pull/{features['pr_number']}"
      else:
          pr_link = None
      files_changed_str = " ".join(features["files_changed"])
      return Commit(
          commit_hash,
          category,
          topic,
          features["title"],
          files_changed_str,
          pr_link,
          features["author"],
          a1,
          a2,
          a3,
      )
  
imports: import argparse
  import csv
  import dataclasses
  import os
  import pprint
  import re
  from collections import defaultdict
  from pathlib import Path
  from typing import List
  import common
  from common import features_to_dict, frontend_categories, get_commit_data_cache, get_features, run, topics
label_desc: Use image node_id 8 for calling the CommitList obj's underlying member method code with example usage: obj.gen_commit(commit_hash) and returns: Commit