i cannot use increment operator it showing the error..!!

CODE:

a=1
while a<4:
    print "Hello world"
    a ++

-------------------------

root@kali:~# python2 1.py
  File "1.py", line 4
    a ++
       ^
SyntaxError: invalid syntax
root@kali:~#

Answers

•   
  

  while a<4:
  Let me explain what it does, You used a while loop with a condition (While A is less than 4), A  is 1 and less than 4.
  

  Use this,
  while a > 4:
      print "Hello world"
      a++

  
  

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