3 replies to this topic

[bbqroast]

Recently I started learning python- a seemingly harmless language...
So anyway I am writing a program to get the area of a triangle.
This is what I have:

h = raw_input("Enter the height of the triangle: ")

w = raw_input("Enter the width of the triangle: ")

print w

print h

area = w * h

area = area/2

print area

After entering the height and width (and printing them out) it gives me this error:

Traceback (most recent call last):

  File "C:\Python24\TRI Calculator", line 5, in -toplevel-

    area = (w * h)

TypeError: can't multiply sequence by non-int

I'm guessing my input is becoming a string and it doesn't like non strings...
If I set the H/W variables in the code it works fine.

Thanks in advanced and happy programming-
bbqroast

[Alexander]

I believe raw_input would take the raw string no matter what type from the input, the input() function will parse an integer accordingly, so try that.

[Flying Dutchman]

as Alexander said, raw_input() always returns string while input() will evalute input. See here and here for a bit more detailed explanation.

[kctan]

One more point to add, you should cast the input type to float. If not, you will not get decimal value in your answer.