what is 2b 3d python

1x = 0
2while x < 5: 
3  print(x)
4  x += 1   #the x += 1 expression is a shortend version for x = x + 1

1# There is no ++ in Python, use instead:
2number += 1

1>>> a = 10
2>>> a += 5
3>>> a
415
5