num_rows = int(input('Please enter the number of rows: '));
for i in range (0,num_rows):  
    for j in range (num_rows,i,-1):  
        print("* ", end="")
    print()
  
  
  
Note: Need to be arranged in compiler after copied
 
 
 OutPut:
  
 Please enter the number of rows: 5
* * * * *
* * * *
* * *
* *
*
  
* * * * *
* * * *
* * *
* *
*