diff --git a/private/Backup.py b/private/Backup.py
index 2333c70..9a33128 100644
--- a/private/Backup.py
+++ b/private/Backup.py
@@ -23,4 +23,4 @@ if __name__ == "__main__":
                 print(ret.getvalue(), file=f)
         exit(0)
     except KeyboardInterrupt as e:
-        pass
\ No newline at end of file
+        pass
diff --git a/private/lib/CFG.py b/private/lib/CFG.py
index 270e0c5..13e2ec5 100644
--- a/private/lib/CFG.py
+++ b/private/lib/CFG.py
@@ -29,4 +29,4 @@ logging.basicConfig(format="%(asctime)s: %(message)s",
                     level=int(config['LOG_LEVEL']['log_level'])
                     )
 del cwd
-REG_FILE = config['DEFAULT']['applications_db']
\ No newline at end of file
+REG_FILE = config['DEFAULT']['applications_db']
diff --git a/private/lib/System.py b/private/lib/System.py
index a32f281..6e915de 100644
--- a/private/lib/System.py
+++ b/private/lib/System.py
@@ -146,7 +146,8 @@ class System:
                 return False
             return True
 
-    def printTuple(self, tup: tuple) -> None:
+    @staticmethod
+    def printTuple(tup: tuple) -> None:
         """Prints a tuple with spaces as separators
 
         :param tup: Tuple you want to print
@@ -190,7 +191,7 @@ if __name__ == "__main__":
         S.register("dar")
         S.lock_user_pw("dar")
         S.add_to_usergroup("dar")
-        #if not S.make_ssh_usable("dar", "SSHpub"):
+        # if not S.make_ssh_usable("dar", "SSHpub"):
         #    print("Huh, error :shrug:")
         exit(0)
     except KeyboardInterrupt:
diff --git a/private/lib/sqlitedb.py b/private/lib/sqlitedb.py
index d457cf9..66bb9f9 100644
--- a/private/lib/sqlitedb.py
+++ b/private/lib/sqlitedb.py
@@ -1,6 +1,6 @@
 #!/usr/bin/env python3
 import sqlite3
-from sys import stderr as STDERR
+from sys import stderr as stderr
 
 
 # create dictionary out of sqlite results
@@ -32,16 +32,16 @@ class SQLitedb:
             self.connection = sqlite3.connect(db)
             self.cursor = self.connection.cursor()
         except sqlite3.Error as e:
-            print("Connection error: %s" % e, file=STDERR)
+            print("Connection error: %s" % e, file=stderr)
 
-        self.cursor.row_factory = dict_factory # every result will be a dict now
+        self.cursor.row_factory = dict_factory  # every result will be a dict now
 
     def __del__(self):
         try:
             self.connection.commit()
             self.connection.close()
         except sqlite3.Error as e:
-            print("Couldn't gracefully close db: %s" % e, file=STDERR)
+            print("Couldn't gracefully close db: %s" % e, file=stderr)
 
     def query(self, qq: str) -> list:
         """Do a query and automagically get the fetched results in a list
@@ -55,7 +55,7 @@ class SQLitedb:
             self.cursor.execute(qq)
             self.last_result = self.cursor.fetchall()
         except sqlite3.Error as e:
-            print("Couldn't execute query %s, exception: %s" % (qq, e), file=STDERR)
+            print("Couldn't execute query %s, exception: %s" % (qq, e), file=stderr)
             self.last_result = []
         return self.last_result
 
@@ -81,10 +81,10 @@ class SQLitedb:
             self.cursor.execute(qq, deliver)
             self.last_result = self.cursor.fetchall()
         except sqlite3.Error as e:
-            print("Couldn't execute query %s, exception: %s" % (qq, e), file=STDERR)
+            print("Couldn't execute query %s, exception: %s" % (qq, e), file=stderr)
             self.last_result = []
         except TypeError as e:
-            print("Types in given tuple doesnt match to execute query \"%s\": %s" % (qq, e), file=STDERR)
+            print("Types in given tuple doesnt match to execute query \"%s\": %s" % (qq, e), file=stderr)
             self.last_result = []
         return self.last_result