while loop to print right triangle

The while loop prints a right triangle:

1 w = int (input ( " Please enter the width of the triangle: " ))
 2 y = 0
 3  while y <4: # y, the right angle of the right triangle is 
4      j = 0 #Number of lines, 0 means the first line 
5      s = W
 . 6  
. 7      IF Y == 0: # right triangle at right angles to the upper right corner 
. 8          the while J < W:
 . 9              Print ( " {:>} {} " .format (( " * " * S), W))
 10              J + = 1
 11              s-= 1
 12         Print ()
 13 is  
14      IF Y ==. 1: # right triangle at right angles to the upper left corner 
15          the while J < W:
 16              Print ( " {: <{}} " .format (( " * " * S), W))
 . 17              +. 1 = J
 18 is              S - =. 1
 . 19          Print ()
 20 is  
21 is      IF Y == 2: # right triangle at right angles to the lower right corner 
22 is          the while J < W:
 23 is              Print ( " {:>} {} " .format (( "* " * (J +. 1 )), W))
 24              J +. 1 =
 25          Print ()
 26 is  
27      IF Y ==. 3: # right triangle at right angles to the lower left corner 
28          the while J < W:
 29              Print ( " {: < {}} " .format (( " * " * (j + 1 )), w))
 30              j + = 1
 31          print ()
 32  
33      y + = 1

Operation result === 》
Please enter triangle width: 5
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