On Tue, Jun 2, 2015, at 00:18, fl wrote: > Hi, > > I just know that '_' is the last result in the Python interpreter. I feel that > it is like 'ans' in Matlab. When I run the following commands. The result of > '_' are always '4'. > > > Because I have tried several commands, such as reversed('fred'), xx and rx, > '4' are always there. > > What is your explanation about the following?
The use of _ for the last result is a special feature of the REPL. It does not work if there is a real variable called _. Try del _ before trying to print _. -- https://mail.python.org/mailman/listinfo/python-list