# Constraints union

class pyasn1.type.constraint.ConstraintsUnion(*constraints)

  Create a ConstraintsUnion logic operator object.

  The ConstraintsUnion logic operator succeeds if at least a single operand succeeds.

  The ConstraintsUnion object can be applied to any constraint and logic operator objects.

  The ConstraintsUnion object duck-types the immutable container object like Python `tuple`.

  Parameters:

    *constraints – Constraint or logic operator objects.

  Examples

      class CapitalOrSmall(IA5String):
          '''
          ASN.1 specification:

          CapitalOrSmall ::=
              IA5String (FROM ("A".."Z") | FROM ("a".."z"))
          '''
          subtypeSpec = ConstraintsUnion(
              PermittedAlphabetConstraint('A', 'Z'),
              PermittedAlphabetConstraint('a', 'z')
          )

      # this will succeed
      capital_or_small = CapitalAndSmall('Hello')

      # this will raise ValueConstraintError
      capital_or_small = CapitalOrSmall('hello!')