projects / OpenSPARC-T2-SAM / blame
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| 57 | 6.21.4.4 Callback example 1: trivial callback | |
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| 59 | ||
| 60 | <P> | |
| 61 | Here's an example of a callback option that takes no arguments, and | |
| 62 | simply records that the option was seen: | |
| 63 | <div class="verbatim"><pre> | |
| 64 | def record_foo_seen(option, opt_str, value, parser): | |
| 65 | parser.saw_foo = True | |
| 66 | ||
| 67 | parser.add_option("--foo", action="callback", callback=record_foo_seen) | |
| 68 | </pre></div> | |
| 69 | ||
| 70 | <P> | |
| 71 | Of course, you could do that with the <code>store_true</code> action. | |
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