Matthew Polack wrote: > Hi, > > I'm a teacher trying to learn Python with my students. > > I am trying to make a very simple 'unit calculator' program...but I get an > error ..I think python is treating my num1 variable as a text string...not > an integer. > > How do I fix this? > > Thanks! > > - Matt > > print ("How many inches would you like to convert? ") > num1 = input('Enter inches here')
As you have guessed, at this point num1 is a string. You can convert it to a float with num1 = float(num1) > print ("You have entered",num1, "inches") > convert = num1 * 2.54 > print ("This is", convert, "centimetres") > > > Traceback (most recent call last): > File "convert.py", line 10, in <module> > convert = num1 * 2.54 > TypeError: can't multiply sequence by non-int of type 'float' Note that int is mentioned here because Python can multiply int with str, though the result might surprise you: >>> "spam" * 3 'spamspamspam' So * also works as the repetition-operator just like + is also used to concat strings. _______________________________________________ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: https://mail.python.org/mailman/listinfo/tutor