How to input testcases

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March 4th, 2013, 12:06 PM

PinkPanther1

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How to input testcases

Hi everybody!

I just started programming in Python, so sorry if this question is a very basic one.

My problem is the following: I would like to start using files including the input for programs to run them. Especially, since I want to possibly attend some contests in some time, I think this would be useful.

Now, I'd like to know how I can do that. I searched all over the internet, but haven't really found any answer that satisfies me.

What I would like to do would be something like the following:

Let's say we have t testcases. For each of those there are n inputs. How would I tell my program that it should the first time take t and the first n values to run, the second time the second line of numbers and so on?

To illustrate I made a little example (not sure if I expressed myself well enough..):

We want to test a program. We get a file with the content

Code:

2
1 2 3 
4 5 6

Here t = 2, n = 3.

I am unsure about how to put this into a program. The way I know it from C++, I can just assign variables to each value of the input. However, the only way I have seen this done in Python was by including it into arrays, which confused me a lot since everybody seemed to do it a different way.

I'd greatly appreciate your help! Please tell me if you have any questions or if I did not express myself clearly. I think I did not really describe my problem too well, but this is the best way I can think of right now.

March 4th, 2013, 02:12 PM

b49P23TIvg

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Code:

def test_function(c0,c1,c2,*args):
    print('polynomial(1): {}'.format(int(c0)+int(c1)+int(c2)+sum(map(int,args))))

def test_driver(test_function, INPUT = 'testcases.dat', n = 3):

    if True:
        data = '2 1 2 3 4 5 6'  # fake data
    else:
        with open(INPUT,'r') as inf:  # real data
            data = inf.read()

    tests = data.split()
    number_of_tests = int(tests[0])
    for i in range(1,len(tests),n):
        test_function(*tests[i:i+n])

something like that.

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