Potential resource leak when exception occurs during file operation

Bug Report

Description

When an exception is raised during a file operation, the file handle may not be properly closed, leading to a resource leak.

Steps to Reproduce

1. Open a file without using a context manager
2. Raise an exception before closing the file
3. The file handle remains open

Expected Behavior

File handles should always be closed, even when exceptions occur.

Suggested Fix

Use a with statement (context manager) to ensure the file is always closed:

# Instead of:
f = open('file.txt', 'r')
data = f.read()
f.close()

# Use:
with open('file.txt', 'r') as f:
    data = f.read()

Environment

• Python 3.x
• Any OS

This is a common Python pitfall that can cause issues in long-running applications.

No repository file, test, or entry point is named. First verify whether this TypeScript repository contains the reported Python file operation, then locate any matching implementation and its tests. Done requires a repository-specific reproduction and evidence that the relevant handle is closed when an exception occurs.