validate.py 文件源码

def validate_parameters(params, shape):
    """Validates input parameters against a schema.

    This is a convenience function that validates parameters against a schema.
    You can also instantiate and use the ParamValidator class directly if you
    want more control.

    If there are any validation errors then a ParamValidationError
    will be raised.  If there are no validation errors than no exception
    is raised and a value of None is returned.

    :param params: The user provided input parameters.

    :type shape: botocore.model.Shape
    :param shape: The schema which the input parameters should
        adhere to.

    :raise: ParamValidationError

    """
    validator = ParamValidator()
    report = validator.validate(params, shape)
    if report.has_errors():
        raise ParamValidationError(report=report.generate_report())