\u3053\u306e\u8a18\u4e8b\u3067\u306f\u3001Python\u30c7\u30fc\u30bf\u30e2\u30c7\u30eb\u306b\u5b9a\u7fa9\u3055\u308c\u3066\u3044\u308b\u7279\u6b8a\u30e1\u30bd\u30c3\u30c9__str__()\u3068__repr__()\u306b\u3064\u3044\u3066\u5b66\u3073\u307e\u3059\u3002__str__()\u3068__repr__()\u30e1\u30bd\u30c3\u30c9\u306f\u3001\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306b\u3064\u3044\u3066\u306e\u6709\u7528\u306a\u60c5\u5831\u3092\u30ed\u30b0\u306b\u8a18\u9332\u3057\u305f\u308a\u3001\u51fa\u529b\u3057\u305f\u308a\u3059\u308b\u3053\u3068\u3067Python\u30b3\u30fc\u30c9\u306e\u30c7\u30d0\u30c3\u30b0\u306b\u5f79\u7acb\u3061\u307e\u3059\u3002<\/p>\n
Python\u306e\u7279\u6b8a\u30e1\u30bd\u30c3\u30c9\u306f\u3001\u4e8c\u91cd\u30a2\u30f3\u30c0\u30fc\u30b9\u30b3\u30a2\u3067\u59cb\u307e\u308a\u3001\u975e\u516c\u5f0f\u306b\u30c0\u30f3\u30c0\u30fc\u30e1\u30bd\u30c3\u30c9\u3068\u3057\u3066\u77e5\u3089\u308c\u3066\u3044\u307e\u3059\u3002\u30c0\u30f3\u30c0\u30fc\u30e1\u30bd\u30c3\u30c9\u306f\u3001Python\u306e\u7d44\u307f\u8fbc\u307f\u6f14\u7b97\u5b50\u3084\u95a2\u6570\u306e\u57fa\u790e\u3068\u306a\u308b\u30e1\u30bd\u30c3\u30c9\u3067\u3059\u3002\u30c0\u30f3\u30c0\u30fc\u30e1\u30bd\u30c3\u30c9\u3092\u76f4\u63a5\u547c\u3073\u51fa\u3059\u3053\u3068\u306f\u907f\u3051\u3001\u4ee3\u308f\u308a\u306b\u30af\u30e9\u30b9\u5185\u3067\u30c0\u30f3\u30c0\u30fc\u30e1\u30bd\u30c3\u30c9\u3092\u5b9f\u88c5\u3057\u3001\u305d\u308c\u3089\u3092\u547c\u3073\u51fa\u3059\u7d44\u307f\u8fbc\u307f\u95a2\u6570\uff08\u4f8b\uff1astr()\u3084repr()\uff09\u3092\u4f7f\u7528\u3059\u308b\u3079\u304d\u3067\u3059\u3002<\/p>\n
__str__()\u30e1\u30bd\u30c3\u30c9\u306f\u3001\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u4eba\u9593\u304c\u8aad\u3081\u308b\u3001\u307e\u305f\u306f\u975e\u516c\u5f0f\u306a\u6587\u5b57\u5217\u8868\u73fe\u3092\u8fd4\u3057\u307e\u3059\u3002\u3053\u306e\u30e1\u30bd\u30c3\u30c9\u306f\u3001\u7d44\u307f\u8fbc\u307f\u306eprint()\u3001str()\u3001format()\u95a2\u6570\u306b\u3088\u3063\u3066\u547c\u3073\u51fa\u3055\u308c\u307e\u3059\u3002\u30af\u30e9\u30b9\u306b__str__()\u30e1\u30bd\u30c3\u30c9\u3092\u5b9a\u7fa9\u3057\u306a\u3044\u5834\u5408\u3001\u7d44\u307f\u8fbc\u307f\u306e\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u5b9f\u88c5\u306f\u4ee3\u308f\u308a\u306b__repr__()\u30e1\u30bd\u30c3\u30c9\u3092\u547c\u3073\u51fa\u3057\u307e\u3059\u3002<\/p>\n
__repr__()\u30e1\u30bd\u30c3\u30c9\u306f\u3001\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u60c5\u5831\u304c\u8c4a\u5bcc\u3067\u516c\u5f0f\u306a\u6587\u5b57\u5217\u8868\u73fe\u3092\u8fd4\u3057\u307e\u3059\u3002\u3053\u306e\u30e1\u30bd\u30c3\u30c9\u306f\u3001\u7d44\u307f\u8fbc\u307f\u306erepr()\u95a2\u6570\u306b\u3088\u3063\u3066\u547c\u3073\u51fa\u3055\u308c\u307e\u3059\u3002\u53ef\u80fd\u3067\u3042\u308c\u3070\u3001\u8fd4\u3055\u308c\u308b\u6587\u5b57\u5217\u306f\u3001\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u518d\u4f5c\u6210\u3059\u308b\u305f\u3081\u306b\u4f7f\u7528\u3067\u304d\u308b\u6709\u52b9\u306aPython\u5f0f\u3067\u3042\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u3059\u3079\u3066\u306e\u5834\u5408\u306b\u304a\u3044\u3066\u3001\u6587\u5b57\u5217\u306f\u60c5\u5831\u3092\u63d0\u4f9b\u3057\u3001\u66d6\u6627\u3055\u3092\u6392\u9664\u3057\u3066\u3044\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n
\u4e00\u822c\u7684\u306b\u3001__str__() \u30e1\u30bd\u30c3\u30c9\u306f\u30e6\u30fc\u30b6\u30fc\u5411\u3051\u3067\u3042\u308a\u3001__repr__() \u30e1\u30bd\u30c3\u30c9\u306f\u958b\u767a\u8005\u5411\u3051\u3067\u3059\u3002<\/p>\n
\u3053\u306e\u30bb\u30af\u30b7\u30e7\u30f3\u306e\u4f8b\u3067\u306f\u3001\u30c7\u30e2\u30f3\u30b9\u30c8\u30ec\u30fc\u30b7\u30e7\u30f3\u306e\u305f\u3081\u306b __str__() \u30e1\u30bd\u30c3\u30c9\u3068 __repr__() \u30e1\u30bd\u30c3\u30c9\u3092\u76f4\u63a5\u547c\u3073\u51fa\u3057\u307e\u3059\u3002<\/p>\n
datetime.datetime\u30af\u30e9\u30b9\u306f\u3001__str__()\u3068__repr__()\u30e1\u30bd\u30c3\u30c9\u306e\u30c7\u30d5\u30a9\u30eb\u30c8\u5b9f\u88c5\u3092\u6301\u3064\u3001Python\u306e\u7d44\u307f\u8fbc\u307f\u30af\u30e9\u30b9\u3067\u3059\u3002<\/p>\n
\u6b21\u306e\u4f8b\u30b3\u30fc\u30c9\u306f\u3001datetime.datetime\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e__str__()\u3068__repr__()\u30e1\u30bd\u30c3\u30c9\u306e\u30c7\u30d5\u30a9\u30eb\u30c8\u5b9f\u88c5\u306b\u3088\u3063\u3066\u8fd4\u3055\u308c\u308b\u6587\u5b57\u5217\u3092\u793a\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n
import<\/span> datetime\r\n\r\nmydate =<\/span> datetime.<\/span>datetime.<\/span>now(<\/span>)<\/span>\r\n\r\nprint<\/span>(<\/span>\"__str__() string: \"<\/span>,<\/span> mydate.<\/span>__str__(<\/span>)<\/span>)<\/span>\r\nprint<\/span>(<\/span>\"str() string: \"<\/span>,<\/span> str<\/span>(<\/span>mydate)<\/span>)<\/span>\r\n\r\nprint<\/span>(<\/span>\"__repr__() string: \"<\/span>,<\/span> mydate.<\/span>__repr__(<\/span>)<\/span>)<\/span>\r\nprint<\/span>(<\/span>\"repr() string: \"<\/span>,<\/span> repr<\/span>(<\/span>mydate)<\/span>)<\/span>\r\n<\/code><\/pre>\n\u51fa\u529b\u7d50\u679c\u306f: (Shutsuryoku kekka wa)<\/p>\n
<\/code><\/pre>\nOutput<\/div>\n<\/code><\/pre>\n__str__() string: 2023-01-27 09:50:37.429078 str() string: 2023-01-27 09:50:37.429078 __repr__() string: datetime.datetime(2023, 1, 27, 9, 50, 37, 429078) repr() string: datetime.datetime(2023, 1, 27, 9, 50, 37, 429078)<\/p>\n
<\/code><\/pre>\n\u51fa\u529b\u306b\u3088\u308c\u3070\u3001str()\u95a2\u6570\u306f__str__()\u3092\u547c\u3073\u51fa\u3057\u3066\u4eba\u9593\u306b\u3068\u3063\u3066\u5206\u304b\u308a\u3084\u3059\u3044\u6587\u5b57\u5217\u3092\u8fd4\u3057\u3001\u4e00\u65b9repr()\u95a2\u6570\u306f__repr__()\u3092\u547c\u3073\u51fa\u3057\u3066\u3088\u308a\u60c5\u5831\u8c4a\u304b\u306a\u6587\u5b57\u5217\u3092\u8fd4\u3057\u307e\u3059\u3002\u5b9f\u969b\u3001eval()\u95a2\u6570\u3068\u7d44\u307f\u5408\u308f\u305b\u3066repr()\u95a2\u6570\u3092\u4f7f\u7528\u3059\u308c\u3070\u3001\u6587\u5b57\u5217\u304b\u3089\u65b0\u3057\u3044\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u4f5c\u6210\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n
import<\/span> datetime\r\n\r\nmydate1 =<\/span> datetime.<\/span>datetime.<\/span>now(<\/span>)<\/span>\r\nmydate2 =<\/span> eval<\/span>(<\/span>repr<\/span>(<\/span>mydate1)<\/span>)<\/span><\/mark>\r\n\r\nprint<\/span>(<\/span>\"mydate1 repr() string: \"<\/span>,<\/span> repr<\/span>(<\/span>mydate1)<\/span>)<\/span>\r\nprint<\/span>(<\/span>\"mydate2 repr() string: \"<\/span>,<\/span> repr<\/span>(<\/span>mydate2)<\/span>)<\/span>\r\n\r\nprint<\/span>(<\/span>\"the values of the objects are equal: \"<\/span>,<\/span> mydate1==<\/span>mydate2)<\/span>\r\n<\/code><\/pre>\n\u51fa\u529b\u306f\u6b21\u306e\u901a\u308a\u3067\u3059\u3002<\/p>\n
<\/code><\/pre>\nOutput<\/div>\n<\/code><\/pre>\nmydate1 repr() string: datetime.datetime(2023, 1, 26, 9, 43, 24, 479635) mydate2 repr() string: datetime.datetime(2023, 1, 26, 9, 43, 24, 479635) the values of the objects are equal: True<\/p>\n
<\/code><\/pre>\n\u524d\u306e\u4f8b\u3067\u306f\u3001mydate1\u306erepr()\u6587\u5b57\u5217\u304b\u3089mydate2\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u4f5c\u6210\u3057\u3001\u305d\u306e\u5f8c\u3001\u4e21\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u5024\u304c\u7b49\u3057\u3044\u3053\u3068\u3092\u691c\u8a3c\u3057\u307e\u3059\u3002<\/p>\n
\u65b0\u3057\u3044\u30af\u30e9\u30b9\u3092\u4f7f\u7528\u3057\u305f__str__()\u3068__repr__()\u306e\u4f8b<\/h2>\n
\u30af\u30e9\u30b9\u3092\u4f5c\u6210\u3059\u308b\u969b\u306b\u306f\u3001\u5c11\u306a\u304f\u3068\u3082__repr__()\u30e1\u30bd\u30c3\u30c9\u3092\u5b9f\u88c5\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u3063\u3066\u3001\u7d44\u307f\u8fbc\u307f\u95a2\u6570\u304c__repr__()\u3092\u4f7f\u7528\u3057\u305f\u969b\u306b\u6709\u7528\u306a\u60c5\u5831\u304c\u8fd4\u3055\u308c\u307e\u3059\u3002<\/p>\n
\u4ee5\u4e0b\u306e\u30af\u30e9\u30b9\u306f\u3001__str__()\u3084__repr__()\u30e1\u30bd\u30c3\u30c9\u3092\u5b9f\u88c5\u3057\u3066\u3044\u307e\u305b\u3093\u3002<\/p>\n
class<\/span> Ocean<\/span>:<\/span>\r\n\r\n def<\/span> __init__<\/span>(<\/span>self,<\/span> sea_creature_name,<\/span> sea_creature_age)<\/span>:<\/span>\r\n self.<\/span>name =<\/span> sea_creature_name\r\n self.<\/span>age =<\/span> sea_creature_age\r\n\r\nc =<\/span> Ocean(<\/span>'Jellyfish'<\/span>,<\/span> 5<\/span>)<\/span>\r\n\r\nprint<\/span>(<\/span>str<\/span>(<\/span>c)<\/span>)<\/span>\r\nprint<\/span>(<\/span>repr<\/span>(<\/span>c)<\/span>)<\/span>\r\n<\/code><\/pre>\nstr()\u3068repr()\u3092\u4f7f\u7528\u3057\u305f\u5834\u5408\u306e\u51fa\u529b\u306f\u6b21\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059\uff1a<\/p>\n
<\/code><\/pre>\nOutput<\/div>\n<\/code><\/pre>\n<__main__.Ocean object at 0x102892860> <__main__.Ocean object at 0x102892860><\/p>\n
<\/code><\/pre>\n\u524d\u306e\u4f8b\u306f\u3001\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e__repr()__\u306e\u30c7\u30d5\u30a9\u30eb\u30c8\u306e\u5b9f\u88c5\u304c\u3001\u30af\u30e9\u30b9\u3068\u30aa\u30d6\u30b8\u30a7\u30af\u30c8ID\u306e\u307f\u3092\u542b\u3093\u306016\u9032\u6570\u5f62\u5f0f\u306e\u6587\u5b57\u5217\u3092\u8fd4\u3059\u3053\u3068\u3092\u793a\u3057\u3066\u3044\u307e\u3059\u304c\u3001\u3053\u308c\u306f\u3042\u307e\u308a\u5f79\u306b\u7acb\u3061\u307e\u305b\u3093\u3002\u306a\u304a\u3001__str__()\u304c\u5b9f\u88c5\u3055\u308c\u3066\u3044\u306a\u3044\u5834\u5408\u3001str()\u306f__repr__()\u3092\u547c\u3073\u51fa\u3057\u307e\u3059\u306e\u3067\u3001str()\u3068repr()\u306f\u540c\u3058\u5024\u3092\u8fd4\u3057\u307e\u3059\u3002<\/p>\n
\u30aa\u30fc\u30b7\u30e3\u30f3\u306e\u30af\u30e9\u30b9\u3092\u3001__str__() \u30e1\u30bd\u30c3\u30c9\u3068 __repr__() \u30e1\u30bd\u30c3\u30c9\u306e\u5b9f\u88c5\u3092\u8ffd\u52a0\u3057\u3066\u30a2\u30c3\u30d7\u30c7\u30fc\u30c8\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n
class<\/span> Ocean<\/span>:<\/span>\r\n\r\n def<\/span> __init__<\/span>(<\/span>self,<\/span> sea_creature_name,<\/span> sea_creature_age)<\/span>:<\/span>\r\n self.<\/span>name =<\/span> sea_creature_name\r\n self.<\/span>age =<\/span> sea_creature_age\r\n \r\n def<\/span> __str__<\/span>(<\/span>self)<\/span>:<\/span><\/mark>\r\n return<\/span> f'The creature type is <\/span>{<\/span>self.<\/span>name}<\/span><\/span> and the age is <\/span>{<\/span>self.<\/span>age}<\/span><\/span><\/span><\/mark>'<\/span><\/span>\r\n\r\n def<\/span> __repr__<\/span>(<\/span>self)<\/span>:<\/span><\/mark>\r\n return<\/span> f'Ocean(\\'<\/span>{<\/span>self.<\/span>name}<\/span><\/span>\\', <\/span>{<\/span>self.<\/span>age}<\/span><\/span><\/span><\/mark>)'<\/span><\/span>\r\n\r\nc =<\/span> Ocean(<\/span>'Jellyfish'<\/span>,<\/span> 5<\/span>)<\/span>\r\n\r\nprint<\/span>(<\/span>str<\/span>(<\/span>c)<\/span>)<\/span>\r\nprint<\/span>(<\/span>repr<\/span>(<\/span>c)<\/span>)<\/span>\r\n<\/code><\/pre>\n\u51fa\u529b\u306f:<\/p>\n
<\/code><\/pre>\nOutput<\/div>\n<\/code><\/pre>\nThe creature type is Jellyfish and the age is 5 Ocean(‘Jellyfish’, 5)<\/p>\n
<\/code><\/pre>\n\u524d\u306e\u4f8b\u3067\u306e__str__()\u306e\u5b9f\u88c5\u306f\u3001\u30e6\u30fc\u30b6\u30fc\u306b\u5bfe\u3057\u3066\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u95a2\u9023\u3059\u308b\u8a73\u7d30\u3092\u63d0\u4f9b\u3059\u308b\u8aad\u307f\u3084\u3059\u3044\u6587\u5b57\u5217\u3092\u8fd4\u3057\u307e\u3059\u3002\u4e00\u65b9\u3001__repr__()\u306e\u5b9f\u88c5\u306f\u3001\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u518d\u4f5c\u6210\u3059\u308b\u305f\u3081\u306b\u4f7f\u7528\u3067\u304d\u308b\u6709\u52b9\u306aPython\u5f0f\u3067\u3042\u308b\u6587\u5b57\u5217\u3092\u8fd4\u3057\u307e\u3059: Ocean(‘Jellyfish’, 5)\u3002\u3053\u306e\u4f8b\u3067\u306f\u3001\u6587\u5b57\u5217\u306b\u5bfe\u3057\u3066f-string\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u3092\u4f7f\u7528\u3057\u3066\u3044\u307e\u3059\u304c\u3001Python\u3067\u30b5\u30dd\u30fc\u30c8\u3055\u308c\u3066\u3044\u308b\u4efb\u610f\u306e\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u3092\u4f7f\u7528\u3057\u3066\u6587\u5b57\u5217\u3092\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u3059\u308b\u3053\u3068\u3082\u3067\u304d\u307e\u3059\u3002<\/p>\n
\u7d50\u8ad6<\/h2>\n
\u3053\u306e\u8a18\u4e8b\u3067\u306f\u3001__str__()\u30e1\u30bd\u30c3\u30c9\u3068__repr__()\u30e1\u30bd\u30c3\u30c9\u306e\u9055\u3044\u3092\u63a2\u308a\u3001\u3053\u308c\u3089\u306e\u7279\u6b8a\u30e1\u30bd\u30c3\u30c9\u3092\u30af\u30e9\u30b9\u306b\u5b9f\u88c5\u3057\u307e\u3057\u305f\u3002\u305d\u306e\u305f\u3081\u3001\u76f4\u63a5\u547c\u3073\u51fa\u3059\u5fc5\u8981\u306f\u3042\u308a\u307e\u305b\u3093\u3067\u3057\u305f\u3002Python\u306e\u6587\u5b57\u5217\u64cd\u4f5c\u306b\u3064\u3044\u3066\u306f\u3001\u5f0a\u793e\u306ePython\u6587\u5b57\u5217\u30c1\u30e5\u30fc\u30c8\u30ea\u30a2\u30eb\u3067\u3055\u3089\u306b\u8a73\u3057\u304f\u5b66\u3073\u307e\u3057\u3087\u3046\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
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