
import unittest
import user_code
import ast
import re   
import importlib
import csv
import unittest
import importlib
import math

class TestTask(unittest.TestCase):
    def setUp(self):
        import user_code
        importlib.reload(user_code)
        self.triangle = [(1, 1), (4, 1), (2.5, 4)]
        self.angle = 90
        self.rotate_triangle = getattr(user_code, 'rotate_triangle', None)
        self.rotate_point = getattr(user_code, 'rotate_point', None)

    def test_returns_three_points(self):
        import user_code
        importlib.reload(user_code)
        func = getattr(user_code, 'rotate_triangle', None)
        _dynamic_test(
            self,
            callable(func),
            "rotate_triangle is defined and callable",
            "rotate_triangle is not defined or not callable",
        )
        result = func(self.triangle, self.angle)
        _dynamic_test(
            self,
            isinstance(result, list) and len(result) == 3,
            "Returned list contains three points",
            f"Returned value is not a list of three points: {result}",
        )

    def test_rotates_points_by_90(self):
        import user_code
        importlib.reload(user_code)
        func = getattr(user_code, 'rotate_triangle', None)
        rotate_point = getattr(user_code, 'rotate_point', None)
        result = func(self.triangle, self.angle)
        _dynamic_test(
            self,
            isinstance(result, list) and len(result) == 3,
            "Returned list contains three points after rotation",
            f"Returned value is not a list of three points: {result}",
        )
        for i, pt in enumerate(self.triangle):
            expected = rotate_point(pt, 90)
            actual = result[i]
            close = math.isclose(actual[0], expected[0], abs_tol=1e-7) and math.isclose(actual[1], expected[1], abs_tol=1e-7)
            _dynamic_test(
                self,
                close,
                f"Point {pt} is correctly rotated by 90 degrees",
                f"Point {pt} expected {expected}, got {actual}",
            )

    def test_order_of_points_preserved(self):
        import user_code
        importlib.reload(user_code)
        func = getattr(user_code, 'rotate_triangle', None)
        rotate_point = getattr(user_code, 'rotate_point', None)
        result = func(self.triangle, self.angle)
        _dynamic_test(
            self,
            isinstance(result, list) and len(result) == 3,
            "Returned list contains three points after rotation (order test)",
            f"Returned value is not a list of three points: {result}",
        )
        for i in range(3):
            expected = rotate_point(self.triangle[i], 90)
            actual = result[i]
            close = math.isclose(actual[0], expected[0], abs_tol=1e-7) and math.isclose(actual[1], expected[1], abs_tol=1e-7)
            _dynamic_test(
                self,
                close,
                f"Point {i} order and value preserved after rotation",
                f"Order or value mismatch at index {i}: expected {expected}, got {actual}",
            )

def _dynamic_test(test_case, condition, success_message, failure_message):
    if condition:
        test_case._testMethodName = success_message
        test_case.assertTrue(True, success_message)
    else:
        test_case._testMethodName = failure_message
        test_case.fail(failure_message)

def normalize_text(text):
    text = text.lower()
    text = re.sub(r"\\s{2,}", " ", text)
    text = re.sub(r"\\s*([,:?])\\s*", r"\\1 ", text)
    return text.strip()

def change_var(code: str, var_name: str, value: str) -> str:
    tree = ast.parse(code)
    lines = code.splitlines()
    changed = False
    # Collect all assignment nodes to modify
    assign_nodes = [
        (i, node)
        for i, node in enumerate(tree.body)
        if isinstance(node, ast.Assign)
        and any(isinstance(target, ast.Name) and target.id == var_name for target in node.targets)
    ]

    # If nothing to change, return unmodified code
    if not assign_nodes:
        return code

    # Perform replacements for all matching assignments (from last to first to not break line offsets)
    for i, node in reversed(assign_nodes):
        start_line = node.lineno - 1
        line = lines[start_line]
        indent = ' ' * (len(line) - len(line.lstrip()))
        lines[start_line] = f"{indent}{var_name} = {value}"
        next_line = len(lines)
        for next_node in tree.body[i+1:]:
            if hasattr(next_node, 'lineno'):
                next_line = next_node.lineno - 1
                break
        if next_line > start_line + 1:
            lines[start_line+1:next_line] = []
        changed = True

    return '\\n'.join(lines) if changed else code

if __name__ == "__main__":
    unittest.main()


test_main.py

Learn the fundamentals of geometric modelling using Python. Explore how to represent, manipulate, and approximate geometric figures programmatically. This course covers basic shapes, transformations, and practical approximation techniques, making geometric concepts accessible and interactive.

Get started with the core concepts of geometric modelling and how Python can be used to represent and manipulate basic shapes.

Delve into geometric transformations such as translation, rotation, and scaling, and see how they affect shapes in Python.

Learn how to approximate curves and complex shapes using polygons and other techniques in Python.

Challenge: Rotation

Solution