invalid syntax error

[penlemon]

Hi Everyone

I'm taking a basic coding class, and while I like it so far, my teacher doesn't really have a knack for teaching, so I'm finding it very difficult to understand. We're translating mathematical expressions into Python and I'm only on #2 and struggling. Lol.

I'm a little embarrassed to show what I've tempted, but whatever.

So this is the expression: n(n-1)/2
And here is the terrible code I attempted:

def main():
n=float(input("Enter value for n: "))
ans1=n*(n-1)
ans2=ans1/2
print("The answer is:", ans2)

And then I get an error when I try to run it. I figure the trouble is the middle part when I try and solve the expression, but Idk how to fix it.

[Larz60+]

you forgot to indent:

def main():
    n = float(input("Enter value for n: "))
    ans1 = n*(n-1)
    ans2 = ans1/2
    print("The answer is:", ans2)
main()

Enter value for n: 25
The answer is: 300.0

[penlemon]

I actually did indent in Python, I just forgot to do it on here. It still tells me invalid stynax. Appart form the indent, the rest looks good though?

[Larz60+]

Copy and try my code,
also, post actual error.
Python version?

[sparkz_alot]

If the formula is n * (n - 1) / 2 , why did you break it into two parts rather than keep it as is?

def main():
    n = float(input("Enter value for n: "))
    ans = n * (n - 1) / 2
    print("The answer is:", ans)

main()

Output:
Enter value for n: 25
The answer is: 300.0