Help me Fixing the error problem ### Error Notification#### Error: AssertionError**Description:**The error indicates that there is an issue with a Timer context manager. The expectation was for the Timer to trigger a TimeoutError, as the function's execution time exceeded the designated time-out limit.**Details:**- The function reportedly took approximately 943 milliseconds to execute.- The specified timeout duration was 487 milliseconds.### Traceback Information**Traceback (most recent call last):**- **File Path:** `/var/gt_test_envs/7hDNGjWK9CdSx3ak/wrk/homeworkTest.py`- **Line Number:** 192- **Function:** `test_Timer`**Code Snippet:**```pythonself.assertFalse(timed_out, 'The Timer context manager failed to raised a TimeoutError even though the function completed after the time-out limit. The code appoximatly took %s ms to exicute and the timeout time was %s ms.'%(sleep, time_out))```**Error Message:**```plaintextAssertionError: True is not false : The Timer context manager failed to raised a TimeoutError even though the function completed after the time-out limit. The code appoximatly took 943 ms to exicute and the timeout time was 487 ms.```### InterpretationThis error highlights a discrepancy between expected and actual behavior of the Timer context manager in the script. The test case was designed to verify that if a function overruns its allocated time, a TimeoutError should occur. However, in this instance, despite the function exceeding the time limit, no error was raised, triggering an AssertionError. The issue likely lies within the Timer implementation. The image displays Python code related to exception handling and a timer class. Below is the transcription and explanation of the code:### Code Explanation1. **Import Statement** ```python import time ``` - This imports the `time` module to handle time-related tasks.2. **Function Definitions** - **`raiseIndexError` Function** ```python def raiseIndexError(): raise IndexError ``` - Raises an `IndexError` exception. - **`raiseZeroDivisionErrorWithMessage` Function** ```python def raiseZeroDivisionErrorWithMessage(message: str): raise ZeroDivisionError(message) ``` - Raises a `ZeroDivisionError` with a custom message. - **`raiseThisException` Function** ```python def raiseThisException(exception): raise exception ``` - Raises a generic exception passed as a parameter. - **`catchAndReturnMessage` Function** ```python def catchAndReturnMessage(message: str, main_function: callable) -> str: try: main_function() except Exception as e: return str(e) else: return message ``` - Attempts to call `main_function`. If an exception is raised, it returns the exception message; otherwise, it returns a supplied message. - **`catchCleanupAndThrow` Function** ```python def catchCleanupAndThrow(main_supplier: callable, index_supplier: callable, zero_supplier: callable, cleanup: callable) -> str: try: result = main_supplier() except IndexError: result = index_supplier() except ZeroDivisionError: result = zero_supplier() finally: cleanup() return result ``` - Calls the `main_supplier` function and handles `IndexError` and `ZeroDivisionError` by calling alternative supplier functions. The `cleanup` function is always executed via `finally`.3. **`Timer` Class** - **Constructor (`__init__` Method)** ```python class Timer: def __init__(self, time_out: int): self.time_out = time_out self.start_time = None self.end_time = None ``` - Initializes a timer with a specified timeout duration. - **`get_total_time` Method** ```python def get

import time def raiseIndexError(): raise IndexError def raiseZeroDivisionErrorWithMessage (message:str): raise ZeroDivisionError(message) def raiseThisException (exception): raise exception def catchAndReturnMessage (message: str, main_function: callable) →> str: try: main_function() except Exception as e: return str(e) else: return message def catchCleanupAndThrow(main_supplier:callable, index_supplier:callable, zero_supplier:callable, cleanup:callable) -> str: try: result = main_supplier() except IndexError: result = index_supplier() except ZeroDivisionError: result = zero_supplier() finally: cleanup() return result class Timer: definit__(self, time_out:int): self.time_out = time_out self.start_time = None self.end_time None def get_total_time(self): if self.end_time == None: return -1 return self.end_time- self.start_time def_enter_(self): self.start_time = int(round(time.time() * 1000)) return self def_exit_(self, exc_type, exc_value, traceback): self.end_time time.time() if self.get_total_time() > self.time_out: raise TimeoutError

import time def raiseIndexError(): raise IndexError def raiseZeroDivisionErrorWithMessage (message:str): raise ZeroDivisionError(message) def raiseThisException (exception): raise exception def catchAndReturnMessage (message: str, main_function: callable) →> str: try: main_function() except Exception as e: return str(e) else: return message def catchCleanupAndThrow(main_supplier:callable, index_supplier:callable, zero_supplier:callable, cleanup:callable) -> str: try: result = main_supplier() except IndexError: result = index_supplier() except ZeroDivisionError: result = zero_supplier() finally: cleanup() return result class Timer: definit__(self, time_out:int): self.time_out = time_out self.start_time = None self.end_time None def get_total_time(self): if self.end_time == None: return -1 return self.end_time- self.start_time def_enter_(self): self.start_time = int(round(time.time() * 1000)) return self def_exit_(self, exc_type, exc_value, traceback): self.end_time time.time() if self.get_total_time() > self.time_out: raise TimeoutError

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Concept explainers

Exception Handling Keywords

An exception is a situation or anomaly that occurs during the program execution which prevents the execution from continuing further. An exception is an unexpected behavior that can cause the program to stop abruptly.

Question

Help me Fixing the error problem

### Error Notification

#### Error: AssertionError

**Description:**
The error indicates that there is an issue with a Timer context manager. The expectation was for the Timer to trigger a TimeoutError, as the function's execution time exceeded the designated time-out limit.

**Details:**
- The function reportedly took approximately 943 milliseconds to execute.
- The specified timeout duration was 487 milliseconds.

### Traceback Information

**Traceback (most recent call last):**

- **File Path:** `/var/gt_test_envs/7hDNGjWK9CdSx3ak/wrk/homeworkTest.py`
- **Line Number:** 192
- **Function:** `test_Timer`

**Code Snippet:**
```python
self.assertFalse(timed_out, 'The Timer context manager failed to raised a TimeoutError even though the function completed after the time-out limit. The code appoximatly took %s ms to exicute and the timeout time was %s ms.'%(sleep, time_out))
```

**Error Message:**
```plaintext
AssertionError: True is not false : The Timer context manager failed to raised a TimeoutError even though the function completed after the time-out limit. The code appoximatly took 943 ms to exicute and the timeout time was 487 ms.
```

### Interpretation

This error highlights a discrepancy between expected and actual behavior of the Timer context manager in the script. The test case was designed to verify that if a function overruns its allocated time, a TimeoutError should occur. However, in this instance, despite the function exceeding the time limit, no error was raised, triggering an AssertionError. The issue likely lies within the Timer implementation.

The image displays Python code related to exception handling and a timer class. Below is the transcription and explanation of the code:

### Code Explanation

1. **Import Statement**
```python
import time
```
- This imports the `time` module to handle time-related tasks.

2. **Function Definitions**

- **`raiseIndexError` Function**
```python
def raiseIndexError():
raise IndexError
```
- Raises an `IndexError` exception.

- **`raiseZeroDivisionErrorWithMessage` Function**
```python
def raiseZeroDivisionErrorWithMessage(message: str):
raise ZeroDivisionError(message)
```
- Raises a `ZeroDivisionError` with a custom message.

- **`raiseThisException` Function**
```python
def raiseThisException(exception):
raise exception
```
- Raises a generic exception passed as a parameter.

- **`catchAndReturnMessage` Function**
```python
def catchAndReturnMessage(message: str, main_function: callable) -> str:
try:
main_function()
except Exception as e:
return str(e)
else:
return message
```
- Attempts to call `main_function`. If an exception is raised, it returns the exception message; otherwise, it returns a supplied message.

- **`catchCleanupAndThrow` Function**
```python
def catchCleanupAndThrow(main_supplier: callable, index_supplier: callable, zero_supplier: callable, cleanup: callable) -> str:
try:
result = main_supplier()
except IndexError:
result = index_supplier()
except ZeroDivisionError:
result = zero_supplier()
finally:
cleanup()
return result
```
- Calls the `main_supplier` function and handles `IndexError` and `ZeroDivisionError` by calling alternative supplier functions. The `cleanup` function is always executed via `finally`.

3. **`Timer` Class**

- **Constructor (`__init__` Method)**
```python
class Timer:
def __init__(self, time_out: int):
self.time_out = time_out
self.start_time = None
self.end_time = None
```
- Initializes a timer with a specified timeout duration.

- **`get_total_time` Method**
```python
def get

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