Code Running Assistance

Prerequisites

You have already created a Python project and populated it with the following code:

import math


def demo(a, b, c):
    d = b ** 2 - 4 * a * c
    if d > 0:
        disc = math.sqrt(d)
        root1 = (-b + disc) / (2 * a)
        root2 = (-b - disc) / (2 * a)
        return root1, root2
    elif d == 0:
        return -b / (2 * a)
    else:
        return "This equation has no roots"


class Solver:
    pass


if __name__ == '__main__':
    solver = Solver()
    a = int(input("a: "))
    b = int(input("b: "))
    c = int(input("c: "))
    result = demo(a, b, c)
    print(result)

You have Python interpreter already configured. Note that for the current project your Python interpreter version should be 3.0 or later.

First run

Run/debug configuration - what is it?

Redirect standard input from a text file

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Pass parameters to the running script

Modify the code sample so that it can use a command-line argument value instead of "4" in the calculations.

import math
import sys


def demo(a, b, c):
    n = float(sys.argv[1])
    d = b ** 2 - n * a * c
    if d > 0:
        disc = math.sqrt(d)
        root1 = (-b + disc) / (2 * a)
        root2 = (-b - disc) / (2 * a)
        return root1, root2
    elif d == 0:
        return -b / (2 * a)
    else:
        return "This equation has no roots"


class Solver:
    pass


if __name__ == '__main__':
    solver = Solver()
    a = int(input("a: "))
    b = int(input("b: "))
    c = int(input("c: "))
    result = demo(a, b, c)
    print(result)

Open the Solver run/debug configuration.
In the Run/Debug Configurations dialog, select Solver from the list of the Python run/debug configurations. Then, click + in the Parameters field and select ClipboadContent from the list of the available macros.
In this example, the clipboard contains the value 76 and it is shown in the Macro preview area.
Click Insert to add the selected macro.
Run the Solver run/debug configuration. Note that the command line now contains "76" as an argument.
Copy any numeric value into the clipboard and rerun the configuration to evaluate the macro.

Regular run

Test run

Creating a test

import unittest

from Solver import Solver



class MyTestCase(unittest.TestCase):

    def test_negative_discr(self):

        s = Solver()

        self.assertRaises(Exception)

    def test_something(self):

        self.assertEqual(True, False)



if __name__ == '__main__':

    unittest.main()