{"id":2033,"date":"2026-07-28T06:22:55","date_gmt":"2026-07-28T06:22:55","guid":{"rendered":"https:\/\/www.vpascode.com\/ja\/docs\/uncategorized\/python-visualizer-guide\/"},"modified":"2026-07-28T06:22:55","modified_gmt":"2026-07-28T06:22:55","slug":"python-visualizer-guide","status":"publish","type":"ld_docs","link":"https:\/\/www.vpascode.com\/ja\/docs\/vpascode-docs\/python-visualizer-guide\/","title":{"rendered":"Python"},"content":{"rendered":"

\u6a5f\u68b0\u5b66\u7fd2\u30d1\u30a4\u30d7\u30e9\u30a4\u30f3\u3001Django\/FastAPI\u306eWeb\u30d0\u30c3\u30af\u30a8\u30f3\u30c9\u3001\u307e\u305f\u306fPython\u3067\u306e\u81ea\u52d5\u5316\u30b9\u30af\u30ea\u30d7\u30c8\u3092\u8a2d\u8a08\u3059\u308b\u969b\u3001\u6fc3\u5bc6\u306a\u30af\u30e9\u30b9\u30d5\u30a1\u30a4\u30eb\u3084\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u69cb\u9020\u3092\u8aad\u3080\u3068\u3001\u5168\u4f53\u306e\u30b7\u30b9\u30c6\u30e0\u30a2\u30fc\u30ad\u30c6\u30af\u30c1\u30e3\u3092\u53ef\u8996\u5316\u3059\u308b\u3053\u3068\u304c\u96e3\u3057\u304f\u306a\u308b\u3002Python Visualizer<\/strong>Python\u306e\u30af\u30e9\u30b9\u5b9a\u7fa9\u3001\u578b\u30d2\u30f3\u30c8\u3001\u62bd\u8c61\u57fa\u5e95\u30af\u30e9\u30b9\u3001\u304a\u3088\u3073dataclasses\u3092\u660e\u78ba\u3067\u30a4\u30f3\u30bf\u30e9\u30af\u30c6\u30a3\u30d6\u306a\u30af\u30e9\u30b9\u56f3\u306b\u5909\u63db\u3059\u308b\u3002\u30af\u30e9\u30b9\u5c5e\u6027\u3001\u30e1\u30bd\u30c3\u30c9\u30b7\u30b0\u30cd\u30c1\u30e3\u3001\u7d99\u627f\u30c1\u30a7\u30fc\u30f3\u3001\u578b\u30a2\u30ce\u30c6\u30fc\u30b7\u30e7\u30f3\u3092\u89e3\u6790\u3059\u308b\u3053\u3068\u3067\u3001\u30d0\u30c3\u30af\u30a8\u30f3\u30c9\u958b\u767a\u8005\u3084\u30c7\u30fc\u30bf\u30a8\u30f3\u30b8\u30cb\u30a2\u306f\u3001\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u6307\u5411\u8a2d\u8a08\u3084\u30e2\u30b8\u30e5\u30fc\u30eb\u9593\u306e\u95a2\u4fc2\u3092\u4e00\u76ee\u3067\u8996\u899a\u7684\u306b\u78ba\u8a8d\u3067\u304d\u308b\u3002<\/p>\n

Python\u53ef\u8996\u5316\u306e\u4ed5\u7d44\u307f<\/h2>\n

VPasCode\u3067\u306f\u3001Python\u306e\u30ec\u30f3\u30c0\u30ea\u30f3\u30b0\u304c\u81ea\u52d5\u7684\u306bclass<\/code>\u30b9\u30c6\u30fc\u30c8\u30e1\u30f3\u30c8\u3001@dataclass<\/code>\u30c7\u30b3\u30ec\u30fc\u30bf\u3001\u578b\u30d2\u30f3\u30c8\uff08typing<\/code>\u30e2\u30b8\u30e5\u30fc\u30eb\u3092\u4f7f\u7528\u3057\u3066\uff09\u3001\u62bd\u8c61\u57fa\u5e95\u30af\u30e9\u30b9\u306e\u5951\u7d04\u3092\u69cb\u9020\u5316\u3055\u308c\u305fUML\u30b9\u30bf\u30a4\u30eb\u306e\u56f3\u306b\u5909\u63db\u3059\u308b\u3002\u30af\u30e9\u30b9\u306f\u4e3b\u306a\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u30ab\u30fc\u30c9\u3068\u3057\u3066\u63cf\u753b\u3055\u308c\u3001\u6ce8\u91c8\u4ed8\u304d\u306e\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u5c5e\u6027\u306f\u578b\u4ed8\u304d\u30d5\u30a3\u30fc\u30eb\u30c9\u3068\u3057\u3066\u30ea\u30b9\u30c8\u3055\u308c\u3001\u660e\u793a\u7684\u306a\u7d99\u627f\uff08class Derived(Base):<\/code>\uff09\u306f\u3001\u8996\u899a\u7684\u306a\u30ce\u30fc\u30c9\u9593\u306e\u95a2\u4fc2\u63a5\u7d9a\u3092\u81ea\u52d5\u7684\u306b\u751f\u6210\u3059\u308b\u3002<\/p>\n

1. \u5fc5\u9808\u306e\u30bb\u30c3\u30c8\u30a2\u30c3\u30d7<\/h3>\n

\u6a19\u6e96\u7684\u306aPython\u306e\u30af\u30e9\u30b9\u968e\u5c64\u3092\u53ef\u8996\u5316\u3059\u308b\u306b\u306f\u3001abc.ABC<\/code>\u3092\u7528\u3044\u3066\u62bd\u8c61\u57fa\u5e95\u30af\u30e9\u30b9\u3092\u5b9a\u7fa9\u3057\u3001\u5177\u4f53\u7684\u306a\u30b5\u30d6\u30af\u30e9\u30b9\u306e\u5b9f\u88c5\u3068\u578b\u30d2\u30f3\u30c8\u3092\u4f75\u7528\u3059\u308b\u3002\u30bf\u30b9\u30af\u51e6\u7406\u30ad\u30e5\u30fc\u306e\u3088\u3046\u306a\u30b3\u30a2\u30c9\u30e1\u30a4\u30f3\u30e2\u30c7\u30eb\u306f\u3001\u57fa\u672c\u7684\u306a\u30af\u30e9\u30b9\u95a2\u4fc2\u3092\u793a\u3057\u3066\u3044\u308b\u3002<\/p>\n

\n
\nPython<\/span>
\n
\n<\/path><\/path><\/svg>
\nVPasCode\u3067Python\u3092\u7de8\u96c6<\/span>
\n<\/a>\n<\/div>\n
\n
\r\n
\r\n Python<\/span>\r\n \r\n <\/path><\/path><\/svg>\r\n Edit Python in VPasCode<\/span>\r\n <\/a>\r\n <\/div>\r\n
\r\n 
from abc import ABC, abstractmethod\r\nfrom typing import List, Optional\r\nfrom datetime import datetime\r\n\r\nclass TaskObserver(ABC):\r\n    @abstractmethod\r\n    def on_task_completed(self, task_id: str) -> None:\r\n        pass\r\n\r\nclass BaseTask(ABC):\r\n    def __init__(self, task_id: str, priority: int = 1):\r\n        self.task_id: str = task_id\r\n        self.priority: int = priority\r\n        self.created_at: datetime = datetime.now()\r\n        self._status: str = \"pending\"\r\n\r\n    @property\r\n    def status(self) -> str:\r\n        return self._status\r\n\r\n    @abstractmethod\r\n    def execute(self) -> bool:\r\n        pass\r\n\r\nclass EmailTask(BaseTask):\r\n    def __init__(self, task_id: str, recipient: str, subject: str):\r\n        super().__init__(task_id, priority=2)\r\n        self.recipient: str = recipient\r\n        self.subject: str = subject\r\n\r\n    def execute(self) -> bool:\r\n        print(f\"{self.recipient}\u306b\u30e1\u30fc\u30eb\u3092\u9001\u4fe1\u4e2d\")\r\n        self._status = \"completed\"\r\n        return True<\/code><\/pre>                <\/div>\r\n                
\r\n                    \r\n                        <\/path><\/path><\/svg>\r\n                        Edit Python in VPasCode<\/span>\r\n                    <\/a>\r\n                <\/div>\r\n            <\/div>\r\n            \n<\/p><\/div>\n
\n
\n<\/path><\/path><\/svg>
\nVPasCode\u3067Python\u3092\u7de8\u96c6<\/span>
\n<\/a>\n<\/div>\n<\/div>\n
\"\"<\/p>\n
\u00a0<\/p>\n
\u9ad8\u5ea6\u306a\u69cb\u9020\u6280\u8853<\/h2>\n
Python\u306e\u53ef\u8996\u5316\u306f\u3001@dataclass<\/code>\u3001Pydantic\u30e2\u30c7\u30eb\u3001\u304a\u3088\u3073FastAPI\u306e\u30ea\u30af\u30a8\u30b9\u30c8\/\u30ec\u30b9\u30dd\u30f3\u30b9\u5951\u7d04\u3067\u69cb\u7bc9\u3055\u308c\u305f\u73fe\u4ee3\u7684\u306a\u30c7\u30fc\u30bf\u30e2\u30c7\u30eb\u3092\u30de\u30c3\u30d4\u30f3\u30b0\u3059\u308b\u306e\u306b\u512a\u308c\u3066\u3044\u308b\u3002<\/p>\n
1. Dataclasses\u3068E\u30b3\u30de\u30fc\u30b9\u30c9\u30e1\u30a4\u30f3\u30e2\u30c7\u30eb<\/h3>\n
\u7d44\u307f\u5408\u308f\u305b\u308b\u3053\u3068\u3067@dataclass<\/code>\u69cb\u9020\u3068\u660e\u793a\u7684\u306a\u578b\u30a2\u30ce\u30c6\u30fc\u30b7\u30e7\u30f3\u3001\u304a\u3088\u3073\u30d5\u30a3\u30fc\u30eb\u30c9\u306e\u30c7\u30d5\u30a9\u30eb\u30c8\u5024\u3092\u7d44\u307f\u5408\u308f\u305b\u308b\u3053\u3068\u3067\u3001VPasCode\u306f\u73fe\u4ee3\u7684\u306aPython\u306e\u30c7\u30fc\u30bf\u30e2\u30c7\u30eb\u3092\u660e\u78ba\u3067\u69cb\u9020\u5316\u3055\u308c\u305f\u56f3\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306b\u5909\u63db\u3059\u308b\uff1a<\/p>\n
\n
\nPython<\/span>
\n
\n<\/path><\/path><\/svg>
\nVPasCode\u3067Python\u3092\u7de8\u96c6<\/span>
\n<\/a>\n<\/div>\n
\n            
\r\n                                
\r\n                    Python<\/span>\r\n                    \r\n                        <\/path><\/path><\/svg>\r\n                        Edit Python in VPasCode<\/span>\r\n                    <\/a>\r\n                <\/div>\r\n                                
\r\n                    
from dataclasses import dataclass, field\r\nfrom typing import List, Optional\r\n\r\n@dataclass\r\nclass Item:\r\n    sku: str\r\n    name: str\r\n    unit_price: float\r\n    quantity: int = 1\r\n\r\n@dataclass\r\nclass Customer:\r\n    customer_id: str\r\n    email: str\r\n    is_vip: bool = False\r\n\r\n@dataclass\r\nclass Order:\r\n    order_id: str\r\n    customer: Customer\r\n    items: List[Item] = field(default_factory=list)\r\n    discount_code: Optional[str] = None\r\n\r\n    def calculate_total(self) -> float:\r\n        total = sum(item.unit_price * item.quantity for item in self.items)\r\n        return total * 0.9 if self.is_vip_order() else total\r\n\r\n    def is_vip_order(self) -> bool:\r\n        return self.customer.is_vip<\/code><\/pre>                <\/div>\r\n                
\r\n                    \r\n                        <\/path><\/path><\/svg>\r\n                        Edit Python in VPasCode<\/span>\r\n                    <\/a>\r\n                <\/div>\r\n            <\/div>\r\n            \n<\/p><\/div>\n
\n
\n<\/path><\/path><\/svg>
\nVPasCode\u3067Python\u3092\u7de8\u96c6<\/span>
\n<\/a>\n<\/div>\n<\/div>\n
\"\"<\/p>\n
\u00a0<\/p>\n
\u6a5f\u68b0\u5b66\u7fd2\u30d1\u30a4\u30d7\u30e9\u30a4\u30f3\u3068\u30ea\u30dd\u30b8\u30c8\u30ea\u306e\u69cb\u9020\u5316<\/h2>\n
\u6a5f\u68b0\u5b66\u7fd2\u30e2\u30c7\u30eb\u306e\u30e9\u30c3\u30d1\u30fc\u3001\u30c7\u30fc\u30bf\u30bb\u30c3\u30c8\u30ed\u30fc\u30c0\u30fc\u3001\u30ea\u30dd\u30b8\u30c8\u30ea\u306e\u62bd\u8c61\u5316\u3092\u53ef\u8996\u5316\u3059\u308b\u3053\u3068\u3067\u3001\u30c7\u30fc\u30bf\u30b5\u30a4\u30a8\u30f3\u30c6\u30a3\u30b9\u30c8\u3084ML\u30a8\u30f3\u30b8\u30cb\u30a2\u306fAI\u30ef\u30fc\u30af\u30d5\u30ed\u30fc\u5168\u4f53\u3067\u660e\u78ba\u306a\u30e2\u30b8\u30e5\u30fc\u30eb\u6027\u3092\u7dad\u6301\u3067\u304d\u308b\u3002<\/p>\n
1. \u6a5f\u68b0\u5b66\u7fd2\u30e2\u30c7\u30eb\u30d1\u30a4\u30d7\u30e9\u30a4\u30f3\u306e\u30a2\u30fc\u30ad\u30c6\u30af\u30c1\u30e3<\/h3>\n
\u30c7\u30fc\u30bf\u524d\u51e6\u7406\u30eb\u30fc\u30c1\u30f3\u3001\u30e2\u30c7\u30eb\u30e9\u30c3\u30d1\u30fc\u3001\u8a55\u4fa1\u6307\u6a19\u30ec\u30dd\u30fc\u30bf\u30fc\u3092\u30b0\u30eb\u30fc\u30d7\u5316\u3057\u3066\u3001\u660e\u78ba\u306a\u6a5f\u68b0\u5b66\u7fd2\u30d1\u30a4\u30d7\u30e9\u30a4\u30f3\u306e\u5883\u754c\u3092\u5b9a\u7fa9\u3059\u308b\uff1a<\/p>\n
\n
\nPython<\/span>
\n
\n<\/path><\/path><\/svg>
\nVPasCode\u3067Python\u3092\u7de8\u96c6<\/span>
\n<\/a>\n<\/div>\n
\n            
\r\n                                
\r\n                    Python<\/span>\r\n                    \r\n                        <\/path><\/path><\/svg>\r\n                        Edit Python in VPasCode<\/span>\r\n                    <\/a>\r\n                <\/div>\r\n                                
\r\n                    
from abc import ABC, abstractmethod\r\nfrom typing import Any, Dict\r\n\r\nclass DatasetLoader(ABC):\r\n    @abstractmethod\r\n    def load_data(self) -> Dict[str, Any]:\r\n        pass\r\n\r\nclass BaseEstimator(ABC):\r\n    def __init__(self, model_name: str):\r\n        self.model_name: str = model_name\r\n        self.is_trained: bool = False\r\n\r\n    @abstractmethod\r\n    def fit(self, X: Any, y: Any) -> None:\r\n        pass\r\n\r\n    @abstractmethod\r\n    def predict(self, X: Any) -> Any:\r\n        pass\r\n\r\nclass ClassificationPipeline(BaseEstimator):\r\n    def __init__(self, model_name: str, learning_rate: float = 0.01):\r\n        super().__init__(model_name)\r\n        self.learning_rate: float = learning_rate\r\n\r\n    def fit(self, X: Any, y: Any) -> None:\r\n        print(f\"{self.model_name} \u3092 lr={self.learning_rate} \u3067\u8a13\u7df4\u4e2d\")\r\n        self.is_trained = True\r\n\r\n    def predict(self, X: Any) -> Any:\r\n        if not self.is_trained:\r\n            raise RuntimeError(\"\u4e88\u6e2c\u3059\u308b\u524d\u306b\u30e2\u30c7\u30eb\u3092\u8a13\u7df4\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\")\r\n        return [0] * len(X)<\/code><\/pre>                <\/div>\r\n                
\r\n                    \r\n                        <\/path><\/path><\/svg>\r\n                        Edit Python in VPasCode<\/span>\r\n                    <\/a>\r\n                <\/div>\r\n            <\/div>\r\n            \n<\/p><\/div>\n
\n
\n<\/path><\/path><\/svg>
\nVPasCode\u3067Python\u3092\u7de8\u96c6<\/span>
\n<\/a>\n<\/div>\n<\/div>\n
\"\"<\/p>\n
\u00a0<\/p>\n
\u6226\u7565\u7684\u306a\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9<\/h2>\n
    \n
  • \u6a19\u6e96\u306e\u578b\u30d2\u30f3\u30c8\u3092\u4f7f\u7528\u3059\u308b\uff1a<\/strong>\u5e38\u306b\u578b\u6ce8\u91c8\u3092\u542b\u3081\u308b\uff08\u4f8b\uff1aname: str<\/code>, items: List[Item]<\/code>\uff09\u3059\u308b\u3053\u3068\u3067\u3001\u30af\u30e9\u30b9\u56f3\u304c\u660e\u78ba\u306a\u30d7\u30ed\u30d1\u30c6\u30a3\u30b7\u30b0\u30cd\u30c1\u30e3\u3092\u63cf\u753b\u3067\u304d\u308b\u3002<\/li>\n
  • \u30c7\u30fc\u30bf\u30b3\u30f3\u30c6\u30ca\u3068\u3057\u3066dataclasses\u3092\u6d3b\u7528\u3059\u308b\uff1a<\/strong>\u4f7f\u7528\u3059\u308b\uff1a@dataclass<\/code>\u7d14\u7c8b\u306a\u30c7\u30fc\u30bf\u30b9\u30ad\u30fc\u30de\u3068\u30d3\u30b8\u30cd\u30b9\u30ed\u30b8\u30c3\u30af\u3092\u5206\u96e2\u3059\u308b\u305f\u3081\u306e\u660e\u78ba\u306a\u30c7\u30fc\u30bf\u30b9\u30c8\u30ec\u30fc\u30b8\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3068\u3057\u3066\u4f7f\u7528\u3059\u308b\u3002<\/li>\n
  • \u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306b\u306fABC\u3092\u4f7f\u7528\u3059\u308b\uff1a<\/strong>\u6b21\u3092\u7d99\u627f\u3059\u308b\uff1aabc.ABC<\/code> \u305d\u3057\u3066\u3001\u62bd\u8c61\u30e1\u30bd\u30c3\u30c9\u306b@abstractmethod<\/code> \u3092\u88c5\u98fe\u3057\u3066\u3001\u660e\u78ba\u306a\u632f\u308b\u821e\u3044\u5951\u7d04\u3092\u5b9a\u7fa9\u3059\u308b\u3002<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"
    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