nanobind: TransformPyConfigDict str-ify values; filesystem timestamp float cast

Author: evertlammerts

src/duckdb_py/pyconnection.cpp

@@ -2146,8 +2146,10 @@ duckdb::pyarrow::RecordBatchReader DuckDBPyConnection::FetchRecordBatchReader(co
 case_insensitive_map_t<Value> TransformPyConfigDict(const py::dict &py_config_dict) {
 	case_insensitive_map_t<Value> config_dict;
 	for (auto kv : py_config_dict) {
-		auto key = py::cast<std::string>(kv.first);
-		auto val = py::cast<std::string>(kv.second);
+		// Config values may be int/bool/str; str-ify them (matches pybind11's py::str(value)) rather than
+		// requiring an actual Python str (py::cast<std::string> would throw on a non-str like 0 or False).
+		auto key = py::cast<std::string>(py::str(kv.first));
+		auto val = py::cast<std::string>(py::str(kv.second));
 		config_dict[key] = Value(val);
 	}
 	return config_dict;

src/duckdb_py/pyfilesystem.cpp

@@ -198,7 +198,8 @@ timestamp_t PythonFilesystem::GetLastModifiedTime(FileHandle &handle) {
 
 	auto last_mod = filesystem.attr("modified")(handle.path);
 
-	return Timestamp::FromEpochSeconds(py::cast<int64_t>(last_mod.attr("timestamp")()));
+	// datetime.timestamp() returns a float; truncate to int64 seconds (py::cast<int64_t> would reject a float)
+	return Timestamp::FromEpochSeconds((int64_t)py::cast<double>(last_mod.attr("timestamp")()));
 }
 void PythonFilesystem::FileSync(FileHandle &handle) {
 	D_ASSERT(!py::gil_check());