diff --git a/main.pyw b/main.pyw
index 24d9b26..5a23346 100644
--- a/main.pyw
+++ b/main.pyw
@@ -4,17 +4,17 @@ from source.option import Options
 from source.translation import load_language
 
 
-# this allows every variable to be accessible from other files, useful for the plugins
-self = __import__(__name__)
-
 options = Options.from_file("./option.json")
 translater = load_language(options.language.get())
+window = None
 
 
 def main_gui():
+    global window
+
     from source.interface.gui import install
-    self.window = install.Window(options)
-    self.window.run()
+    window = install.Window(options)
+    window.run()
 
 
 def main_cli(argparser: argparse.ArgumentParser):
diff --git a/source/__init__.py b/source/__init__.py
index 60d2c36..9166bda 100644
--- a/source/__init__.py
+++ b/source/__init__.py
@@ -1,11 +1,11 @@
+import os
+
 # metadata
 __version__ = (0, 12, 0)
 __author__ = 'Faraphel'
 
 
 # external links
-import os
-
 discord_url = "https://discord.gg/HEYW5v8ZCd"
 github_wiki_url = "https://github.com/Faraphel/MKWF-Install/wiki/help"
 readthedocs_url = "https://mkwf-install.readthedocs.io/"
diff --git a/source/safe_eval/safe_eval.py b/source/safe_eval/safe_eval.py
index 6e17b9d..7f376c0 100644
--- a/source/safe_eval/safe_eval.py
+++ b/source/safe_eval/safe_eval.py
@@ -11,8 +11,7 @@ if TYPE_CHECKING:
     from source import TemplateSafeEval, Env
 
 
-self = __import__(__name__)
-self.safe_eval_cache = {}
+safe_eval_cache: dict[hash, Callable] = {}
 
 
 class SafeEvalException(Exception):
@@ -38,6 +37,7 @@ def safe_eval(template: "TemplateSafeEval", env: "Env" = None, macros: dict[str,
 
     :return: the lambda expression
     """
+    global safe_eval_cache
 
     if len(template) == 0: return lambda *_, **__: ""
     if env is None: env = {}
@@ -46,7 +46,7 @@ def safe_eval(template: "TemplateSafeEval", env: "Env" = None, macros: dict[str,
 
     template_key: hash = hash((template, args, tuple(env.items())))  # unique identifiant for every template
     # if the safe_eval return a callable and have already been called, return the cached callable
-    if template_key in self.safe_eval_cache: return self.safe_eval_cache[template_key]
+    if template_key in safe_eval_cache: return safe_eval_cache[template_key]
 
     # replace the macro in the template
     template = replace_macro(template=template, macros=macros)
@@ -138,5 +138,5 @@ def safe_eval(template: "TemplateSafeEval", env: "Env" = None, macros: dict[str,
 
     # return the evaluated formula
     lambda_template = eval(compile(expression, "<safe_eval>", "eval"), globals_, locals_)
-    self.safe_eval_cache[template_key] = lambda_template  # cache the callable for potential latter call
+    safe_eval_cache[template_key] = lambda_template  # cache the callable for potential latter call
     return better_safe_eval_error(lambda_template, template=template)
diff --git a/source/translation.py b/source/translation.py
index 9d524a3..1418f66 100644
--- a/source/translation.py
+++ b/source/translation.py
@@ -6,9 +6,8 @@ if TYPE_CHECKING:
     from source.mkw.ModConfig import ModConfig
 
 
-self = __import__(__name__)
-self._language = None
-self._language_data = {}
+_language: str | None = None
+_language_data: dict = {}
 
 
 def load_language(language: str):
@@ -17,8 +16,10 @@ def load_language(language: str):
     :param language: language code to load
     :return:
     """
-    self._language = language
-    self._language_data = json.loads(Path(f"./assets/language/{language}.json").read_text(encoding="utf8"))
+    global _language, _language_data
+
+    _language = language
+    _language_data = json.loads(Path(f"./assets/language/{language}.json").read_text(encoding="utf8"))
 
 
 def translate(text) -> str:
@@ -27,7 +28,7 @@ def translate(text) -> str:
     :param text: list of text to translate
     :return: translated text
     """
-    return self._language_data.get("translation", {}).get(text, text)
+    return _language_data.get("translation", {}).get(text, text)
 
 
 def translate_external(mod_config: "ModConfig", message_texts: dict[str, str], default: str = "") -> str:
@@ -38,9 +39,9 @@ def translate_external(mod_config: "ModConfig", message_texts: dict[str, str], d
     :param default: the default message if no translation are found
     :return: the translated message
     """
-    message = message_texts.get(self._language)
+    message = message_texts.get(_language)
     if message is None: message = message_texts.get("*")
     if message is None: message = default
-    return mod_config.multiple_safe_eval(message, args=["language"])(language=self._language)
+    return mod_config.multiple_safe_eval(message, args=["language"])(language=_language)