# import contextlib

**[import contextlib](https://docs.python.org/3/library/contextlib.html)** is a Python import that provides utilities for creating context managers. Use `@contextmanager` to write `with` statement handlers for setup/cleanup.

## Example

```python
# Python
# description: create context managers, suppress exceptions

from contextlib import contextmanager, suppress
import os

# Create context manager from generator
@contextmanager
def working_directory(path):
    """Change to directory, then restore."""
    old_cwd = os.getcwd()
    os.chdir(path)
    try:
        yield
    finally:
        os.chdir(old_cwd)

# Use context manager
with working_directory("/tmp"):
    print(os.getcwd())  # /tmp
print(os.getcwd())  # back to original

# Suppress exceptions
with suppress(FileNotFoundError):
    os.remove("nonexistent.txt")  # No error raised

# Multiple context managers
from contextlib import ExitStack
with ExitStack() as stack:
    f1 = stack.enter_context(open("file1.txt"))
    f2 = stack.enter_context(open("file2.txt"))
```

## Common functions and decorators

- `@contextmanager`: convert generator to context manager
- `contextlib.suppress(*exceptions)`: suppress specific exceptions
- `contextlib.ExitStack()`: manage multiple context managers
- `contextlib.redirect_stdout(file)`: redirect stdout to file
- `contextlib.redirect_stderr(file)`: redirect stderr to file