fix pylint issues

Author: falk-werner

backup.py

@@ -3,16 +3,15 @@
 """Simple backup application."""
 
 import os
-import time
 import argparse
+import shutil
+import hashlib
 from pathlib import Path
 import tkinter as tk
 from tkinter import ttk
 from tkinter import filedialog
 from PIL import Image, ImageTk
 import yaml
-import shutil
-import hashlib
 
 import tk_async_execute as tae
 
@@ -138,7 +137,6 @@ def __init__(self, project: str):
 
         # load project
         items = self.load_project()
-        print(f'{items}')
         for item in items:
             name = item['name']
             itemtype = item['type']
@@ -270,42 +268,45 @@ def start_backup(self):
                 path = item['values'][1]
                 items.append({'name': name, 'type': itemtype, 'path': path})
             self.progressbar.start()
-            tae.async_execute(self.do_backup(items, folder), callback=self.finish_backup, wait=False, visible=False)
+            tae.async_execute(self.do_backup(items, folder),
+                callback=self.finish_backup, wait=False, visible=False)
 
+    # pylint: disable-next=too-many-locals
     async def do_backup(self, items, folder):
         """Performs the actual backup"""
         # get file list
         if os.listdir(folder):
-            print(f'error: folder is not empty')
+            print('error: folder is not empty')
             return
 
         files = []
         for item in items:
             itemtype = item['type']
             if itemtype == 'Folder':
                 path = item['path']
-                for dir, dname, fnames in os.walk(item['path']):
-                    targetdir = dir[len(os.path.commonpath([path, dir])):]
+                for dirname, _, fnames in os.walk(item['path']):
+                    targetdir = dirname[len(os.path.commonpath([path, dirname])):]
                     if targetdir.startswith('/'):
                         targetdir = targetdir[1:]
                     targetdir = os.path.join(item['name'], targetdir)
                     for fname in fnames:
-                        source = os.path.join(dir, fname)                        
+                        source = os.path.join(dirname, fname)
                         target = os.path.join(targetdir, fname)
                         files.append({'source': source, 'target': target})
             elif itemtype == 'File':
                 files.append({'source': item['path'], 'target': item['name']})
 
-        with open(os.path.join(folder, 'checksums.txt'), 'w', newline='\n', encoding='utf-8') as checksum_file:
+        with open(os.path.join(folder, 'checksums.txt'), 'w',
+                  newline='\n', encoding='utf-8') as checksum_file:
             for file in files:
                 source = file['source']
                 rel_target = file['target']
-                target = os.path.join(folder, rel_target)       
+                target = os.path.join(folder, rel_target)
                 os.makedirs(os.path.dirname(target), exist_ok=True)
                 shutil.copy2(source, target)
                 with open(target, 'rb') as f:
                     digest = hashlib.file_digest(f, "sha256")
-                    checksum_file.write(f'SHA256 ({rel_target}) = {digest.hexdigest()}\n')        
+                    checksum_file.write(f'SHA256 ({rel_target}) = {digest.hexdigest()}\n')
 
     def on_closing(self):
         """Saves the project when the application is closed."""