查詢標籤

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程式碼範例

Python

如要瞭解如何安裝及使用 Natural Language 的用戶端程式庫，請參閱Natural Language 用戶端程式庫。 詳情請參閱 Natural Language Python API 參考說明文件。

如要向 Natural Language 進行驗證，請設定應用程式預設憑證。 詳情請參閱「為本機開發環境設定驗證」。

def query_category(index_file, category_string, n_top=3):
    """Find the indexed files that are the most similar to
    the query label.

    The list of all available labels:
    https://cloud.google.com/natural-language/docs/categories
    """

    with open(index_file) as f:
        index = json.load(f)

    # Make the category_string into a dictionary so that it is
    # of the same format as what we get by calling classify.
    query_categories = {category_string: 1.0}

    similarities = []
    for filename, categories in index.items():
        similarities.append((filename, similarity(query_categories, categories)))

    similarities = sorted(similarities, key=lambda p: p[1], reverse=True)

    print("=" * 20)
    print(f"Query: {category_string}\n")
    print(f"\nMost similar {n_top} indexed texts:")
    for filename, sim in similarities[:n_top]:
        print(f"\tFilename: {filename}")
        print(f"\tSimilarity: {sim}")
        print("\n")

    return similarities

後續步驟

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