use pathlib.Path for directories and files

corrlib/find.py

@@ -7,9 +7,10 @@ from .input.implementations import codes
 from .tools import k2m, get_db_file
 from .tracker import get
 from typing import Any, Optional
+from pathlib import Path
 
 
-def _project_lookup_by_alias(db: str, alias: str) -> str:
+def _project_lookup_by_alias(db: Path, alias: str) -> str:
     """
     Lookup a projects UUID by its (human-readable) alias.
 
@@ -37,7 +38,7 @@ def _project_lookup_by_alias(db: str, alias: str) -> str:
     return str(results[0][0])
 
 
-def _project_lookup_by_id(db: str, uuid: str) -> list[tuple[str, str]]:
+def _project_lookup_by_id(db: Path, uuid: str) -> list[tuple[str, str]]:
     """
     Return the project information available in the database by UUID.
 
@@ -61,7 +62,7 @@ def _project_lookup_by_id(db: str, uuid: str) -> list[tuple[str, str]]:
     return results
 
 
-def _db_lookup(db: str, ensemble: str, correlator_name: str, code: str, project: Optional[str]=None,  parameters: Optional[str]=None,
+def _db_lookup(db: Path, ensemble: str, correlator_name: str, code: str, project: Optional[str]=None,  parameters: Optional[str]=None,
                created_before: Optional[str]=None, created_after: Optional[Any]=None, updated_before: Optional[Any]=None, updated_after: Optional[Any]=None) -> pd.DataFrame:
     """
     Look up a correlator record in the database by the data given to the method.
@@ -228,10 +229,10 @@ def sfcf_filter(results: pd.DataFrame, **kwargs: Any) -> pd.DataFrame:
     return results.drop(drops)
 
 
-def find_record(path: str, ensemble: str, correlator_name: str, code: str, project: Optional[str]=None, parameters: Optional[str]=None,
+def find_record(path: Path, ensemble: str, correlator_name: str, code: str, project: Optional[str]=None, parameters: Optional[str]=None,
                 created_before: Optional[str]=None, created_after: Optional[str]=None, updated_before: Optional[str]=None, updated_after: Optional[str]=None, revision: Optional[str]=None, **kwargs: Any) -> pd.DataFrame:
     db_file = get_db_file(path)
-    db = os.path.join(path, db_file)
+    db = path / db_file
     if code not in codes:
         raise ValueError("Code " + code + "unknown, take one of the following:" + ", ".join(codes))
     get(path, db_file)
@@ -246,7 +247,7 @@ def find_record(path: str, ensemble: str, correlator_name: str, code: str, proje
     return results.reset_index()
 
 
-def find_project(path: str, name: str) -> str:
+def find_project(path: Path, name: str) -> str:
     """
     Find a project by it's human readable name.
 
@@ -264,10 +265,10 @@ def find_project(path: str, name: str) -> str:
     """
     db_file = get_db_file(path)
     get(path, db_file)
-    return _project_lookup_by_alias(os.path.join(path, db_file), name)
+    return _project_lookup_by_alias(path / db_file, name)
 
 
-def list_projects(path: str) -> list[tuple[str, str]]:
+def list_projects(path: Path) -> list[tuple[str, str]]:
     """
     List all projects known to the library.