Python exceptions are events that can modify the flow of control.
Exceptions are triggered automatically on errors.
The exceptions are processed by four statements.
| Statement | Description |
|---|---|
| try/except | Catch and recover from exceptions raised by Python, or by you. |
| try/finally | Perform cleanup actions, whether exceptions occur or not. |
| raise | Trigger an exception manually in your code. |
| assert | Conditionally trigger an exception in your code. |
| with/as | Implement context managers in Python 2.6, 3.0, and later (optional in 2.5). |