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

class TestTask(unittest.TestCase):
    def test_returns_correct_summaries(self):
        import user_code
        importlib.reload(user_code)
        api_response = {
            "devices": [
                {"id": "devA", "status": "Active", "last_update": "2024-06-01T09:15:00Z"},
                {"id": "devB", "status": "Inactive", "last_update": "2024-06-01T08:50:00Z"},
                {"id": "devC", "status": "Maintenance", "last_update": "2024-06-01T07:30:00Z"}
            ]
        }
        expected = [
            "Device devA: Status=Active, Last Update=2024-06-01T09:15:00Z",
            "Device devB: Status=Inactive, Last Update=2024-06-01T08:50:00Z",
            "Device devC: Status=Maintenance, Last Update=2024-06-01T07:30:00Z"
        ]
        result = user_code.summarize_device_status(api_response)
        _dynamic_test(
            self,
            isinstance(result, list) and result == expected,
            "Returns correct summaries for all devices.",
            f"Expected {expected}, got {result}",
        )

    def test_handles_empty_devices(self):
        import user_code
        importlib.reload(user_code)
        api_response = {"devices": []}
        result = user_code.summarize_device_status(api_response)
        _dynamic_test(
            self,
            isinstance(result, list) and len(result) == 0,
            "Returns empty list when devices list is empty.",
            f"Expected empty list, got {result}",
        )

    def test_handles_missing_devices_key(self):
        import user_code
        importlib.reload(user_code)
        api_response = {}
        result = user_code.summarize_device_status(api_response)
        _dynamic_test(
            self,
            isinstance(result, list) and len(result) == 0,
            "Returns empty list when devices key is missing.",
            f"Expected empty list, got {result}",
        )

    def test_handles_missing_fields(self):
        import user_code
        importlib.reload(user_code)
        api_response = {
            "devices": [
                {"status": "Active", "last_update": "2024-06-01T09:15:00Z"},
                {"id": "devB", "last_update": "2024-06-01T08:50:00Z"},
                {"id": "devC", "status": "Maintenance"}
            ]
        }
        expected = [
            "Device Unknown: Status=Active, Last Update=2024-06-01T09:15:00Z",
            "Device devB: Status=Unknown, Last Update=2024-06-01T08:50:00Z",
            "Device devC: Status=Maintenance, Last Update=Unknown"
        ]
        result = user_code.summarize_device_status(api_response)
        _dynamic_test(
            self,
            isinstance(result, list) and result == expected,
            "Handles missing fields by substituting 'Unknown'.",
            f"Expected {expected}, got {result}",
        )

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

Master Python as a powerful tool for automation engineering. This course guides you through practical and advanced Python techniques to automate repetitive tasks, analyze data, and interact with systems, all tailored for automation engineers. Each section blends engaging theory with hands-on, real-world challenges.

Learn how Python can automate repetitive and time-consuming tasks commonly faced by automation engineers, from log parsing to report generation.

Dive into data manipulation and analysis using Python and pandas, tailored for automation engineers handling structured data.

Master Python techniques for interacting with systems, automating tests, and analyzing results—core skills for automation engineers.

Challenge: Simulate API Data Retrieval

解答