Type hinting adjustments.

main.py

···
 
 
 def dollcode(num: int):
-    output = []
+    output: list[str] = []
     window = num
     limit = 1000
 
···
     return output
 
 
-def print_dollcode(output):
+def print_dollcode(output: list[str]):
     string = ""
 
     for char in output: