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Leela

Mon Apr 20, 2009 10:23 am


Help needed

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Can someone help me with this little beginner's program, please? 
It works when I try it without the input part - just writing the definition and calling the function in the editor:

def check_fermat (a,b,c,n):
        if a**n + b**n == c**n and n > 2:
                print "Fermat was wrong!"
        else:
                print "Fermat was correct"
        
check_fermat (3,4,6,3)
 

But when I try to work with an input, and making it an actual program, it evaluates: 


def check_fermat (a,b,c,n):    
    if a**n + b**n == c**n and n > 2:
        print "Fermat was wrong!"
    else:
        print "Fermat was correct"
x=raw_input ("Enter x: ")
y=raw_input ("Enter y: ")
z=raw_input ("Enter z: ")
n=raw_input ("Enter n: ")
check_fermat (x,y,z,n)

I also tried it like this (without definitions or function calls):

a=raw_input ("Enter a: ")
b=raw_input ("Enter b: ")
c=raw_input ("Enter c: ")
n=raw_input ("Enter n: ")

if a**n + b**n == c**n and n > 2:
        print "Fermat was wrong!"
else:
        print "Fermat was correct"


Same error.

Any advice will be greatly appreciated.

Mod Edit: Remember to use syntax tags! Thanks :) Code Here


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Leela

Mon Apr 20, 2009 11:15 am


Re: Help needed

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I think I've got it. I should have converted the input to integers. Here's my (finally!) working version:
a = raw_input ("Enter a: ")
b = raw_input ("Enter b: ")
c = raw_input ("Enter c: ")
n = raw_input ("Enter n: ")   

if int(a)**int(n)+int(b)**int(n)==int(c)**int(n):
    print "Holy smokes, Fermat was wrong!" 
else:
    print "Yep, Fermat was correct" 

raw_input('press Return>')

Any suggestion to make it neater?


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Alexmula

Mon Apr 20, 2009 12:16 pm


RE:Help needed

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use a = input("Enter a: ") instead of the raw_input. raw_input expects string values


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Leela

Mon Apr 20, 2009 1:16 pm


Re: RE:Help needed

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use a = input("Enter a: ") instead of the raw_input. raw_input expects string values
Oh, that's why Python interpreted my assignments as strings! Well, this is how my textbook taught me to enter inputs; I will know better from now on. 
Huge thanks!


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wtd

Mon Apr 20, 2009 2:32 pm


RE:Help needed

-----------------------------------

Especially with Python, you will need to use code tags to preserve indentation.


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Leela

Mon Apr 20, 2009 7:54 pm


Re: RE:Help needed

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Especially with Python, you will need to use code tags to preserve indentation.
Thanks, I can see now how it should be posted.