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【Udemy Python3入門+応用】 54. Docstringsとは

Posted at

※この記事はUdemyの
現役シリコンバレーエンジニアが教えるPython3入門+応用+アメリカのシリコンバレー流コードスタイル
の講座を受講した上での、自分用の授業ノートです。
講師の酒井潤さんから許可をいただいた上で公開しています。

##■関数の説明の記述
#####◆関数内に記述する

docstrings
def example_func(param1, param2):
    """Example function with types documented in the docstring.
    
    Args:
        param1 (int): The first parameter. 
        param2 (str): The second parameter.
    
    Returns:
        bool: The return value. True for success, False otherwise.
    """
    print(param1)
    print(param2)
    return True

一旦サンプルの関数を用意した。
このサンプルの説明書きとして、通常であれば説明する行の上にコメントアウトするが、
関数の場合は内側の先頭に書くのがお約束。

#####◆docstringsを呼び出す

docstrings
def example_func(param1, param2):
    """Example function with types documented in the docstring.

    Args:
        param1 (int): The first parameter.
        param2 (str): The second parameter.

    Returns:
        bool: The return value. True for success, False otherwise.
    """
    print(param1)
    print(param2)
    return True

print(example_func.__doc__)
result
Example function with types documented in the docstring.

    Args:
        param1 (int): The first parameter.
        param2 (str): The second parameter.

    Returns:
        bool: The return value. True for success, False otherwise.

.__doc__のメソッドで、その関数のdocstrinsを呼び出せる。

#####◆docstringsを呼び出す2

docstrings
def example_func(param1, param2):
    """Example function with types documented in the docstring.

    Args:
        param1 (int): The first parameter.
        param2 (str): The second parameter.

    Returns:
        bool: The return value. True for success, False otherwise.
    """
    print(param1)
    print(param2)
    return True

help(example_func)
result
Help on function example_func in module __main__:

example_func(param1, param2)
    Example function with types documented in the docstring.
    
    Args:
        param1 (int): The first parameter.
        param2 (str): The second parameter.
    
    Returns:
        bool: The return value. True for success, False otherwise.

helpを使うことでも、docstringsを呼び出すことができる。

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