Python Library Reference

Previous: 6.21.4.3 Raising errors in Up: 6.21.4 Option Callbacks Next: 6.21.4.5 Callback example 2:

---

6.21.4.4 Callback example 1: trivial callback

Here's an example of a callback option that takes no arguments, and simply records that the option was seen:

def record_foo_seen(option, opt_str, value, parser):
    parser.saw_foo = True

parser.add_option("--foo", action="callback", callback=record_foo_seen)

Of course, you could do that with the store_true action.

---

Python Library Reference

Previous: 6.21.4.3 Raising errors in Up: 6.21.4 Option Callbacks Next: 6.21.4.5 Callback example 2:

---

Release 2.4.2, documentation updated on 28 September 2005.