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object --+ | basevalidator.BaseValidator --+ | IsNonblank
Only allow non-blank strings (i.e. those with a length more than 0).
For example:
>>> v = IsNonblank() >>> v ('abcd') 'abcd' >>> v ('') Traceback (most recent call last): ... ValueError: can't validate ''
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Inherited from Inherited from |
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Inherited from |
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Check a value is of the desired form. This is the workhorse method that is called by validate to check passed values. As such, errors are signalled by either by throwing a meaningful exception or by returning false. This is one of the obvious and easiest places to customize behaviour by overriding in a subclass.
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