Fixed #26806 -- Triple quoted docstrings in docs/ref/forms/validation.txt.

    class MultiEmailField(forms.Field):

        def to_python(self, value):

            "Normalize data to a list of strings."

            """Normalize data to a list of strings."""

            # Return an empty list if no input was given.

            if not value:

                return []

            return value.split(',')

        def validate(self, value):

            "Check if value consists only of valid emails."

            """Check if value consists only of valid emails."""

            # Use the parent's handling of required fields, etc.

            super(MultiEmailField, self).validate(value)

            for email in value:

                validate_email(email)