Use pathlib where possible

app/models/user.py

@@ -4,14 +4,14 @@ from flask import current_app, url_for
 from flask_hashids import HashidMixin
 from flask_login import UserMixin
 from sqlalchemy.ext.associationproxy import association_proxy
+from pathlib import Path
 from typing import Union
 from werkzeug.security import generate_password_hash, check_password_hash
 import jwt
-import os
 import re
 import secrets
 import shutil
-from app import db, hashids, login
+from app import db, hashids
 from app.ext.flask_sqlalchemy import IntEnumColumn
 from .corpus import Corpus
 from .corpus_follower_association import CorpusFollowerAssociation
@@ -145,9 +145,8 @@ class User(HashidMixin, UserMixin, db.Model):
         self.password_hash = generate_password_hash(password)
 
     @property
-    def path(self):
-        return os.path.join(
-            current_app.config.get('NOPAQUE_DATA_DIR'), 'users', str(self.id))
+    def path(self) -> Path:
+        return current_app.config.get('NOPAQUE_DATA_DIR') / 'users' / f'{self.id}'
 
     @staticmethod
     def create(**kwargs):
@@ -155,16 +154,21 @@ class User(HashidMixin, UserMixin, db.Model):
         db.session.add(user)
         db.session.flush(objects=[user])
         db.session.refresh(user)
+        user_spacy_nlp_pipeline_models_dir = user.path / 'spacy_nlp_pipeline_models'
+        user_tesseract_ocr_pipeline_models_dir = user.path / 'tesseract_ocr_pipeline_models'
+        user_corpora_dir = user.path / 'corpora'
+        user_jobs_dir = user.path / 'jobs'
         try:
-            os.mkdir(user.path)
-            os.mkdir(os.path.join(user.path, 'spacy_nlp_pipeline_models'))
-            os.mkdir(os.path.join(user.path, 'tesseract_ocr_pipeline_models'))
-            os.mkdir(os.path.join(user.path, 'corpora'))
-            os.mkdir(os.path.join(user.path, 'jobs'))
+            user.path.mkdir()
+            user_spacy_nlp_pipeline_models_dir.mkdir()
+            user_tesseract_ocr_pipeline_models_dir.mkdir()
+            user_corpora_dir.mkdir()
+            user_jobs_dir.mkdir()
         except OSError as e:
+            # TODO: Potential leftover cleanup
             current_app.logger.error(e)
             db.session.rollback()
-            raise e
+            raise
         return user
 
     @staticmethod