diff --git a/src/pcloud/oauth2.py b/src/pcloud/oauth2.py
index db2dd70..babae18 100644
--- a/src/pcloud/oauth2.py
+++ b/src/pcloud/oauth2.py
@@ -11,6 +11,7 @@
 
 PORT = 65432
 REDIRECT_URL = f"http://localhost:{PORT}/"
+AUTHORIZE_URL = f"https://my.pcloud.com/oauth2/authorize"
 
 
 class HTTPServerHandler(BaseHTTPRequestHandler):
@@ -47,7 +48,7 @@ class TokenHandler(object):
 
     def __init__(self, client_id):
         self._id = client_id
-        self.auth_url = f"https://my.pcloud.com/oauth2/authorize?response_type=code&redirect_uri={self.redirect_url}&client_id={self._id}"
+        self.auth_url = f"{AUTHORIZE_URL}?response_type=code&redirect_uri={self.redirect_url}&client_id={self._id}"
 
     def open_browser(self):
         """Hook which is called before request is handled."""
diff --git a/src/pcloud/pcloudfs.py b/src/pcloud/pcloudfs.py
index 37c146f..d9e5b6d 100644
--- a/src/pcloud/pcloudfs.py
+++ b/src/pcloud/pcloudfs.py
@@ -3,19 +3,18 @@
 import os
 import tempfile
 
+from contextlib import closing
+from datetime import datetime
+from fs import errors
+from fs.enums import ResourceType
 from fs.base import FS
 from fs.info import Info
 from fs.opener import Opener
-from fs import errors
-from fs.enums import ResourceType
-from fs.path import abspath, dirname
+from fs.path import abspath
+from fs.path import dirname
 from fs.mode import Mode
 from fs.subfs import SubFS
 from pcloud import api
-from fs.enums import ResourceType
-from contextlib import closing
-
-from datetime import datetime
 
 
 DT_FORMAT_STRING = "%a, %d %b %Y %H:%M:%S %z"
@@ -359,7 +358,7 @@ def remove(self, path):
         _path = self.validatepath(path)
         if not self.exists(_path):
             raise errors.ResourceNotFound(path=_path)
-        if self.getinfo(_path).is_dir == True:
+        if self.getinfo(_path).is_dir:
             raise errors.FileExpected(_path)
         with self._lock:
             resp = self.pcloud.deletefile(path=_path)
@@ -371,7 +370,7 @@ def removedir(self, path):
         if not self.exists(_path):
             raise errors.ResourceNotFound(path=_path)
         info = self.getinfo(_path)
-        if info.is_dir == False:
+        if not info.is_dir:
             raise errors.DirectoryExpected(_path)
         if not self.isempty(_path):
             raise errors.DirectoryNotEmpty(_path)
@@ -384,7 +383,7 @@ def removetree(self, dir_path):
         _path = self.validatepath(dir_path)
         if not self.exists(_path):
             raise errors.ResourceNotFound(path=_path)
-        if self.getinfo(_path).is_dir == False:
+        if not self.getinfo(_path).is_dir:
             raise errors.DirectoryExpected(_path)
         with self._lock:
             resp = self.pcloud.deletefolderrecursive(path=_path)
diff --git a/src/pcloud/tests/test_integration.py b/src/pcloud/tests/test_integration.py
index 8d4490e..f41872d 100644
--- a/src/pcloud/tests/test_integration.py
+++ b/src/pcloud/tests/test_integration.py
@@ -3,12 +3,10 @@
 import time
 import zipfile
 
-from fs import opener
 from io import BytesIO
 from pathlib import Path
 from pcloud.api import PyCloud
 from pcloud.api import O_CREAT
-from urllib.parse import quote
 
 
 @pytest.fixture