Changed code to support older Python versions

venv/lib/python3.11/site-packages/fastapi_cli/config.py

@@ -0,0 +1,50 @@
+import logging
+from pathlib import Path
+from typing import Any, Dict, Optional
+
+from pydantic import BaseModel, StrictStr
+from pydantic.version import VERSION as PYDANTIC_VERSION
+
+logger = logging.getLogger(__name__)
+
+PYDANTIC_VERSION_MINOR_TUPLE = tuple(int(x) for x in PYDANTIC_VERSION.split(".")[:2])
+PYDANTIC_V2 = PYDANTIC_VERSION_MINOR_TUPLE[0] == 2
+
+
+class FastAPIConfig(BaseModel):
+    entrypoint: Optional[StrictStr] = None
+
+    @classmethod
+    def _read_pyproject_toml(cls) -> Dict[str, Any]:
+        """Read FastAPI configuration from pyproject.toml in current directory."""
+        pyproject_path = Path.cwd() / "pyproject.toml"
+
+        if not pyproject_path.exists():
+            return {}
+
+        try:
+            import tomllib  # type: ignore[import-not-found, unused-ignore]
+        except ImportError:
+            try:
+                import tomli as tomllib  # type: ignore[no-redef, import-not-found, unused-ignore]
+            except ImportError:  # pragma: no cover
+                logger.debug("tomli not available, skipping pyproject.toml")
+                return {}
+
+        with open(pyproject_path, "rb") as f:
+            data = tomllib.load(f)
+
+            return data.get("tool", {}).get("fastapi", {})  # type: ignore
+
+    @classmethod
+    def resolve(cls, entrypoint: Optional[str] = None) -> "FastAPIConfig":
+        config = cls._read_pyproject_toml()
+
+        if entrypoint is not None:
+            config["entrypoint"] = entrypoint
+
+        # Pydantic v2 uses model_validate, v1 uses parse_obj
+        if not PYDANTIC_V2:
+            return cls.parse_obj(config)  # type: ignore[no-any-return, unused-ignore]
+
+        return cls.model_validate(config)  # type: ignore[no-any-return, unused-ignore, attr-defined]