havent handled wrong testcase result yet, added --user-alng , user default lang, fixed python2 error added ispaid $$$

Author: hrdkmishra

code_editor/1929_concatenation-of-array.py

@@ -1,4 +1,5 @@
 class Colors:
+    YELLOW = "\033[1;33m"  # Bold yellow
     GREEN = "\033[1;32m"  # Bold green
     ORANGE = "\033[1;33m"  # Bold orange
     RED = "\033[1;31m"  # Bold red

color.py

@@ -15,4 +15,23 @@ def load_credentials_from_config():
         with open(CONFIG_FILE_PATH, "r") as config_file:
             config_data = toml.load(config_file)
         return config_data.get("LEETCODE_SESSION"), config_data.get("CSRF_TOKEN")
-    return None, None
+    return None, None
+
+
+def load_user_data_from_config():
+    if os.path.exists(CONFIG_FILE_PATH):
+        with open(CONFIG_FILE_PATH, "r") as config_file:
+            config_data = toml.load(config_file)
+        return config_data.get("USER_LANG", "").lower()
+    return None
+
+
+def save_user_data_to_config(user_lang):
+    config_data = {"USER_LANG": user_lang}
+    if os.path.exists(CONFIG_FILE_PATH):
+        with open(CONFIG_FILE_PATH, "r") as config_file:
+            existing_config_data = toml.load(config_file)
+        existing_config_data.update(config_data)
+        config_data = existing_config_data
+    with open(CONFIG_FILE_PATH, "w") as config_file:
+        toml.dump(config_data, config_file)