add default import and add libs.

DR.py

@@ -100,6 +100,7 @@ def main() -> None:
         print(crash.all_thread)
         print(crash.all_process)
     print("Difficult_Rocket 已关闭")
+    sys.exit(0)
 
 
 if __name__ == '__main__':

Difficult_Rocket/api/__init__.py

@@ -11,9 +11,6 @@ github: @shenjackyuanjie
 gitee:  @shenjackyuanjie
 """
 
-from typing import TYPE_CHECKING
-
-if TYPE_CHECKING:
-    from Difficult_Rocket.api import screen, mod, exception
+from Difficult_Rocket.api import screen, mod, exception
 
 __all__ = ['screen', 'mod', 'exception']

Difficult_Rocket/api/mod/__init__.py

@@ -8,7 +8,7 @@
 from typing import Tuple, List, Optional
 
 # from libs
-from MCDR.version import Version
+from libs.MCDR.version import Version
 
 # from DR
 from Difficult_Rocket.main import Game