Utilize pylint como linter y corregi la mayoria de los errores

files/models.py

@@ -1,6 +1,7 @@
-from flask_sqlalchemy import SQLAlchemy
 from datetime import datetime
 
+from flask_sqlalchemy import SQLAlchemy
+
 db = SQLAlchemy()
 
 
@@ -40,14 +41,25 @@ class File(db.Model):
     id = db.Column(db.Integer, primary_key=True)
     filename = db.Column(db.String, nullable=False)
     private = db.Column(db.Integer, nullable=False)
-    category_id = db.Column(db.Integer, db.ForeignKey('categories.id'), nullable=False)
-    file_type_id = db.Column(db.Integer, db.ForeignKey('file_types.id'), nullable=False)
+    category_id = db.Column(
+        db.Integer,
+        db.ForeignKey('categories.id'),
+        nullable=False)
+    file_type_id = db.Column(
+        db.Integer,
+        db.ForeignKey('file_types.id'),
+        nullable=False)
 
-    def __init__(self, filename=None, private=None, category_id=None, file_type_id=None):
+    def __init__(
+            self,
+            filename=None,
+            private=None,
+            category_id=None,
+            file_type_id=None):
         self.filename = filename
         self.private = private
         self.category_id = category_id
-        self.file_type_id = file_type_id 
+        self.file_type_id = file_type_id
 
     def __repr__(self):
         return f'<File name:{self.filename}>'
@@ -65,6 +77,7 @@ class Category(db.Model):
     def __repr__(self):
         return f'<Category name:{self.name}>'
 
+
 class FileType(db.Model):
     __tablename__ = 'file_types'
     id = db.Column(db.Integer, primary_key=True)