PANDEY2 Archana (MORPHO) wrote: > Hello > > I hereby would like to share the problem I have found regarding python > list implementation:- > > As per python documentation python list is mutable data object. > > That problem I found with the list is that is behaves differently when we > use '+=' and '+' '=' operators separately. For example- > a=a+1 and a +=1 both behave in same way for all data types except python > list
`a += b` is only *approximately* the same as `a = a+b`. The documentation says: An augmented assignment expression like x += 1 can be rewritten as x = x + 1 to achieve a similar, but not exactly equal effect. In the augmented version, x is only evaluated once. Also, when possible, the actual operation is performed in-place, meaning that rather than creating a new object and assigning that to the target, the old object is modified instead. https://docs.python.org/2/reference/simple_stmts.html#augmented-assignment-statements > Please find the attached module and execute it on windows python32, See > the difference in output. I cannot see the attached module. Did you forget to attach it, or did your mail server delete it? -- Steven -- https://mail.python.org/mailman/listinfo/python-list
