First, forget about the def a() statement. def is for defining a function and this is not a function. Second, research the difference between == (logical test) and = (assignment operator). Third, take a look at the length of "op" just after the readline(). You can add a line that says
print(len(op)) right after the readline to see what's goingon. There's a new line character in there. Try using op = op.strip() before you do all the if statements. That will remove the trailing newline, and change the first test back to op == "d". Hope this helps. John >PS: At the first statement, we've also tried >op == "d": >But that doesn't work either. >On Saturday, January 25, 2014 10:02:15 AM UTC, justinp...@gmail.com wrote: >> My son is learning Python and I know nothing about computers. >> >> He's written a simple calculator program that doesn't work. For the life of >> me, I can't see why. >> --------------= Posted using GrabIt =---------------- ------= Binary Usenet downloading made easy =--------- -= Get GrabIt for free from http://www.shemes.com/ =- -- https://mail.python.org/mailman/listinfo/python-list
