def delete_policy(PolicyArn=None):
    """
    Deletes the specified managed policy.
    Before you can delete a managed policy, you must first detach the policy from all users, groups, and roles that it is attached to, and you must delete all of the policy's versions. The following steps describe the process for deleting a managed policy:
    For information about managed policies, see Managed Policies and Inline Policies in the IAM User Guide .
    See also: AWS API Documentation
    
    
    :example: response = client.delete_policy(
        PolicyArn='string'
    )
    
    
    :type PolicyArn: string
    :param PolicyArn: [REQUIRED]
            The Amazon Resource Name (ARN) of the IAM policy you want to delete.
            For more information about ARNs, see Amazon Resource Names (ARNs) and AWS Service Namespaces in the AWS General Reference .
            

    """
    pass
