a= {"results": {
    "arc_easy": {
      "alias": "arc_easy",
      "acc,none": 0.6902356902356902,
      "acc_stderr,none": 0.00948817285190372,
      "acc_norm,none": 0.6422558922558923,
      "acc_norm_stderr,none": 0.00983577275734336
    },
    "arc_easy": {
      "alias": "arc_easy",
      "acc,none": 0.6902356902356902,
      "acc_stderr,none": 0.00948817285190372,
      "acc_norm,none": 0.6422558922558923,
      "acc_norm_stderr,none": 0.00983577275734336
    }
  }
}
print(len(a['results']))