Where to suggest python syntax change ?

[DeaD_EyE]

You want to do a syntax change without knowledge about Python?
Bad idea! Also the example is not Pythonic and does not follow the PEP8.

5 + 5 = 10 math operator
# It's the case

5 & 5 = 55 combine operator
# breaks all existing code!!!

5+"string" = error
# is a TypeError
# if you want to do this, use JavaScript

5&"string" = "5string"
# Type Error + this operation is not defined for strings

You request will not only make all existing code invalid, it will weakens the TypeSafety.
Before you make suggestions to change the syntax and behavior, you should learn Python and the history of Python.

I guess the developers get every day this crazy requests to change something.