Python基础 · free preview
Exceptions and Context Managers
Raise your own exceptions, define custom exception classes, run cleanup with finally, and build context managers for setup-and-teardown work.
1. Overview
Overview
2. Raising Exceptions
Raising Exceptions
3. Custom Exception Classes
Custom Exception Classes
4. finally and Cleanup
finally and Cleanup
5. The with Statement's Protocol
The with Statement's Protocol
6. The contextlib Shortcut
The contextlib Shortcut
7. A Validated Loader
A Validated Loader
8. A Timing Context
A Timing Context
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