Is generator next visible in Python 3

Question

I have a generator that generates a series  for example   def triangle nums           Generates a series of triangle numbers        tn   0     counter   1     while True          tn    counter         yield tn         counter      1   In Python 2 I am able to make the following calls   g   triangle nums      get the generator g next                 get the next value   however in Python 3 if I execute the same two lines of code I get the following error   AttributeError   generator  object has no attribute  next    but  the loop iterator syntax does work in Python 3  for n in triangle nums        if not exit cond         do something        I haven t been able to find anything yet that explains this difference in behavior for Python 3

User · Answer

If your code must run under Python2 and Python3  use the 2to3 six library like this   import six  six next g     on PY2K   g next    and onPY3K   next g

User · Answer

g next   has been renamed to g   next      The reason for this is consistency  special methods like   init     and   del     all have double underscores  or  dunder  in the current vernacular   and  next   was one of the few exceptions to that rule  This was fixed in Python 3 0       But instead of calling g   next      use next g        There are other special attributes that have gotten this fix  func name  is now   name    etc

User · Answer

Try   next g    Check out this neat table that shows the differences in syntax between 2 and 3 when it comes to this

[python] Is generator.next() visible in Python 3?

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