working

models/__init__.py

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+from models.astro_object import AstroObject
+from models.session import Session
+
+__all__ = ['AstroObject', 'Session']

models/astro_object.py

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+from dataclasses import dataclass
+from pathlib import Path
+
+
+@dataclass
+class AstroObject:
+    """Модель астрономического объекта"""
+    name: str
+    folder: Path
+    photo_count: int = 0
+
+    def increment_photo_count(self):
+        self.photo_count += 1
+
+    def get_object_log_path(self) -> Path:
+        return self.folder / "ObjectLog.txt"
+
+    def __str__(self):
+        return f"AstroObject(name='{self.name}', photos={self.photo_count})"

models/session.py

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+from dataclasses import dataclass, field
+from datetime import datetime
+from pathlib import Path
+from typing import List, Optional
+from models.astro_object import AstroObject
+
+
+@dataclass
+class Session:
+    """Модель сессии наблюдения"""
+    camera: str
+    optics: str
+    start_time: datetime
+    end_time: Optional[datetime] = None
+    objects: List[AstroObject] = field(default_factory=list)
+    session_folder: Optional[Path] = None
+
+    def add_object(self, astro_object: AstroObject):
+        self.objects.append(astro_object)
+
+    def get_current_object(self) -> Optional[AstroObject]:
+        return self.objects[-1] if self.objects else None
+
+    def get_session_name(self) -> str:
+        return f"AstroSession_{self.start_time.strftime('%Y-%m-%d')}"
+
+    def finish(self):
+        self.end_time = datetime.now()
+
+    def is_active(self) -> bool:
+        return self.end_time is None