In an earlier question about lists, I was told about the issue of creation of local names in a function. However, I still can't understand why the program below outputs:
[999] sss [999] and not two identical lines of output. For both operators "+=" should anyway work in similar manner in the function xx in my view. Thanks for your help in advance. M. K. Shen ---------------------------------------------------------- def xx(list,str): list+=[999] str+="sss" lista=[] stra="" lista+=[999] stra+="sss" print(lista,stra) listb=[] strb="" xx(listb,strb) print(listb,strb) -- http://mail.python.org/mailman/listinfo/python-list