metal <metal29a <at> gmail.com> writes: > > '11' + '1' == '111' is well known. > > but it suprises me '11'+'1' IS '111'. > > Why? Obviously they are two differnt object. > > Is this special feature of imutable object?
As other posters have pointed out, CPython does cache some small strings. In this case, however, it's because '1' + '11' is constant folded. -- http://mail.python.org/mailman/listinfo/python-list