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Context Managers
Context Manager Type
File Handler
Database Connection
Thread Lock
Timer
Temporary Directory
Implementation
FileHandler - File Operations
DatabaseConnection - DB Operations
ThreadLock - Thread Safety
Timer - Execution Timing
TemporaryDirectory - Temp Files
Context Manager Parameters
Test Code
Display Options
Show Execution Flow
Show Resource Usage
Show Advanced Features
Run Visualization
Console Output
>
Context Manager Learning
Current Configuration
Type:
file
Implementation:
file_handler
Parameters:
mode='r', encoding='utf-8'
Resource:
test.txt
Context Manager Flow
Animate
1
Resource Acquisition
2
Context Entered
3
Code Execution
4
Resource Cleanup
Resource Management
Resource Type:
file_handler
Acquisition:
__enter__()
Cleanup:
__exit__()
Exception Handling:
Automatic
Resource Impact
Execution Time:
0.000s
Overhead:
~0.000s
Resource Usage:
+0KB
Best Practices
Always implement __enter__ and __exit__ methods
Handle exceptions properly in __exit__
Ensure resources are always cleaned up
Use contextlib for simple context managers