decorators

Basic/hello-world.py

@@ -1,13 +1,7 @@
-def j(n):
-    if n == 1:
-        return 1
-    
-    if n % 2 == 0 :
-        return 2 * j(n/2) - 1
-    else:
-        return 2 * j((n-1)/2) + 1
-    
+def main():
+    print("This is the main function.")
 
-for i in range(1,33):
-    print(f'{i} : {j(i)}')
 
+print('hello world')
+if __name__ == "__main__":
+    main()