[Python-checkins] r63965 - python/trunk/Lib/tokenize.py

[skip at pobox.com]

    Benjamin> Thanks for letting me know. It's still using while 1 in
    Benjamin> 3.0. Shall I revert the 2.6 revision, and change it in 3.0?

That would seem to make sense.  Python 2.6:

    >>> import dis
    >>> def while1():
    ...   while 1:
    ...     pass
    ... 
    >>> dis.dis(while1)
      2           0 SETUP_LOOP               3 (to 6)

      3     >>    3 JUMP_ABSOLUTE            3
            >>    6 LOAD_CONST               0 (None)
                  9 RETURN_VALUE        
    >>> def whileTrue():
    ...   while True:
    ...     pass
    ... 
    >>> dis.dis(whileTrue)
      2           0 SETUP_LOOP              12 (to 15)
            >>    3 LOAD_GLOBAL              0 (True)
                  6 JUMP_IF_FALSE            4 (to 13)
                  9 POP_TOP             

      3          10 JUMP_ABSOLUTE            3
            >>   13 POP_TOP             
                 14 POP_BLOCK           
            >>   15 LOAD_CONST               0 (None)
                 18 RETURN_VALUE        

Python 3.0:

    >>> import dis
    >>> def while1():
    ...   while 1:
    ...     pass
    ... 
    >>> dis.dis(while1)
      2           0 SETUP_LOOP               3 (to 6) 

      3     >>    3 JUMP_ABSOLUTE            3 
            >>    6 LOAD_CONST               0 (None) 
                  9 RETURN_VALUE         
    >>> def whileTrue():
    ...   while True:
    ...     pass
    ... 
    >>> dis.dis(whileTrue)
      2           0 SETUP_LOOP               3 (to 6) 

      3     >>    3 JUMP_ABSOLUTE            3 
            >>    6 LOAD_CONST               0 (None) 
                  9 RETURN_VALUE         

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