Ned Deily added the comment:
If you want to pursue your suggestion for a change in the language, the best
place to do so is first on the python-ideas mailing list
(https://mail.python.org/mailman3/lists/python-ideas.python.org/). The issue
tracker here is more for bugs and minor
Vedran Čačić added the comment:
Well, just reverse the order of -= in second statement. If you write =-, it
will magically work. ;-)
But in the general case, sometimes introducing temporary variables is the
simplest solution.
The alternative would be to implement pointwise -= for tuples,
New submission from Masoud Azizi :
I want to rediuse two var togeder!
When i do that buy sum is rediuse to zero and not effect the sellsum
buySum[pair] -= sellSum[pair]
sellSum[pair] -= buySum[pair]
Cuz of that i try this statment but its not work!
Its a simple code that will python support
