How to Mock a Timeout per Dependency Call in Python

```python
import time
from unittest.mock import Mock, patch

def call_dependency(dependency, timeout):
    start = time.time()
    result = dependency.call()
    elapsed = time.time() - start
    if elapsed > timeout:
        raise TimeoutError(f"Dependency call took {elapsed:.2f}s, exceeding timeout {timeout}s")
    return result

if __name__ == "__main__":
    # Mock that simulates a slow dependency
    slow_dependency = Mock()
    slow_dependency.call.side_effect = lambda: time.sleep(0.2) or "data"
    
    # Mock that responds quickly
    fast_dependency = Mock()
    fast_dependency.call.return_value = "result"
    
    # Test with a short timeout
    try:
        call_dependency(slow_dependency, timeout=0.1)
    except TimeoutError as e:
        print(f"Caught: {e}")
    
    # Test with a generous timeout
    print(f"Fast dependency result: {call_dependency(fast_dependency, timeout=0.1)}")