find even number
to fnd even or not
- event-calendar
- dsadsa
to fnd even or not
In case you need a form field that only has one acceptable value, you can create a custom form field derived from `forms.ChoiceField` which only accepts one choice. Alternatively you can: * Ignore the value of such a field entirely. * Simply pass a single choice to a the `forms.ChoiceField`
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