replace litterals and cross platform cls

GoGoDownloader.py

@@ -17,7 +17,7 @@ except AttributeError:
 
 def gogodownloader(config):
     CURRENT_DOMAIN = config["CurrentGoGoAnimeDomain"]
-    os.system("cls")
+    os.system("cls" if os.name == "nt" else "clear")
     while True:
         print(
             f""" {Fore.LIGHTBLUE_EX}
@@ -166,7 +166,7 @@ def gogodownloader(config):
 
         use_again = input(f"{IN}Do you want to use the app again? (y|n) > ").lower()
         if use_again == "y":
-            os.system("cls")
+            os.system("cls" if os.name == "nt" else "clear")
         else:
             break
 

backend.py

@@ -126,7 +126,7 @@ class gogoanime:
         )
         soup = BeautifulSoup(page.content, "html.parser")
         loginCheck = soup(text=re.compile("Logout"))
-        if len(loginCheck) is 0:
+        if len(loginCheck) == 0:
             raise Exception(
                 "User is not logged in, make sure account has been activated"
             )