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  1. python.org
    https://docs.python.org › reference › datamodel.html

    3. Data model — Python 3.13.3 documentation

    3 days ago · Data model¶ 3.1. Objects, values and types¶ Objects are Python’s abstraction for data. All data in a Python program is represented by objects or by relations between objects. …

  2. python.org
    https://docs.python.org › ja › library › contextlib.html

    29.6. contextlib --- with 文コンテキスト用ユーティリティ — …

    from contextlib import closing from urllib.request import urlopen with closing (urlopen ('http://www.python.org')) as page: for line in page: print (line) page を明示的に close する必要 …

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