本文介绍如何使用Alibaba Cloud SDK for Python将一个弹性公网IP EIP（Elastic IP Address）添加到共享带宽中。

1. 在下载的SDK目录中，打开aliyun-openapi-python-sdk-examples\sdk_examples\examples\eip文件夹。
2. 使用编辑器打开eip_add_cbwp.py文件，根据实际情况配置相关参数，保存退出。
   完整代码示例如下：

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   #encoding=utf-8 import sys from aliyunsdkvpc.request.v20160428 import CreateCommonBandwidthPackageRequest from aliyunsdkvpc.request.v20160428 import AddCommonBandwidthPackageIpRequest from aliyunsdkvpc.request.v20160428 import DescribeCommonBandwidthPackagesRequest from aliyunsdkvpc.request.v20160428 import RemoveCommonBandwidthPackageIpRequest from aliyunsdkvpc.request.v20160428 import DeleteCommonBandwidthPackageRequest from sdk_lib.common_util import CommonUtil from sdk_lib.sdk_eip import *   """ 创建EIP->创建带宽包->通用带宽包id->添加EIP到共享带宽包中->查询共享带宽包->移除共享带宽包中的EIP->删除共享带宽包->释放EIP """ class CommonBandwidthPackage(object):     def __init__(self, client):         self.client = client       def create_common_bandwidth_package(self, params):         """         create_common_bandwidth_package: 创建共享带宽           """         try:             request = CreateCommonBandwidthPackageRequest.CreateCommonBandwidthPackageRequest()             # 共享带宽的带宽峰值，单位为Mbps             request.set_Bandwidth(params['bandwidth'])             response = self.client.do_action_with_exception(request)             response_json = json.loads(response)             if CheckStatus.check_status(TIME_DEFAULT_OUT, DEFAULT_TIME,                                         self.describe_cbwp_status,                                         AVAILABLE, response_json["BandwidthPackageId"]):                 return response_json         except ServerException as e:             ExceptionHandler.server_exception(e)         except ClientException as e:             ExceptionHandler.client_exception(e)       def add_common_bandwidth_packageIp(self, params):         """         add_common_bandwidth_packageIp: 添加EIP到共享带宽中           """         try:             request = AddCommonBandwidthPackageIpRequest.AddCommonBandwidthPackageIpRequest()             # EIP实例的ID             request.set_IpInstanceId(params['ip_instance_id'])             # 共享带宽的ID             request.set_BandwidthPackageId(params['bandwidth_package_id'])             response = self.client.do_action_with_exception(request)             response_json = json.loads(response)             return response_json         except ServerException as e:             ExceptionHandler.server_exception(e)         except ClientException as e:             ExceptionHandler.client_exception(e)       def describe_cbwp(self, cbwp_id):         """         describe_cbwp: 查询共享带宽实例信息           """         try:             request = DescribeCommonBandwidthPackagesRequest.DescribeCommonBandwidthPackagesRequest()             # 共享带宽实例的ID             request.set_BandwidthPackageId(cbwp_id)             response = self.client.do_action_with_exception(request)             response_json = json.loads(response)             return response_json         except ServerException as e:             ExceptionHandler.server_exception(e)         except ClientException as e:             ExceptionHandler.client_exception(e)       def describe_cbwp_status(self, cbwp_id):         """         describe_cbwp_status: 查询共享带宽实例状态           """         # 共享带宽实例的ID         response = self.describe_cbwp(cbwp_id)         return response["CommonBandwidthPackages"]["CommonBandwidthPackage"][0]["Status"]         def remove_common_bandwidth_packageIp(self, params):         """         remove_common_bandwidth_packageIp: 移除共享带宽中的EIP           """         try:             request = RemoveCommonBandwidthPackageIpRequest.RemoveCommonBandwidthPackageIpRequest()             # EIP实例的ID             request.set_IpInstanceId(params['ip_instance_id'])             # 共享带宽实例的ID             request.set_BandwidthPackageId(params['bandwidth_package_id'])             response = self.client.do_action_with_exception(request)             response_json = json.loads(response)             return response_json         except ServerException as e:             ExceptionHandler.server_exception(e)         except ClientException as e:             ExceptionHandler.client_exception(e)         def delete_common_bandwidth_package(self, params):         """         delete_common_bandwidth_package: 删除共享带宽包           """         try:             request = DeleteCommonBandwidthPackageRequest.DeleteCommonBandwidthPackageRequest()             # 共享带宽实例的ID             request.set_BandwidthPackageId(params['bandwidth_package_id'])             # 是否强制删除共享带宽实例             request.set_Force(params['force'])             response = self.client.do_action_with_exception(request)             response_json = json.loads(response)             return response_json         except ServerException as e:             ExceptionHandler.server_exception(e)         except ClientException as e:             ExceptionHandler.client_exception(e)   def main():       client = AcsClient(             '<your-access-key-id>',     # 您的AccessKey ID             '<your-access-key-secret>', # 您的AccessKey Secret             '<your-region-id>')         # 您的地域ID       params = {}       # 创建EIP     eip_response_json = eip.allocate_eip_address(params)     CommonUtil.log("allocate_eip_address", eip_response_json)     params['allocation_id'] = eip_response_json["AllocationId"]       # 创建带宽包     params['allocation_id'] = eip_response_json["AllocationId"]     params['ip_instance_id'] = eip_response_json["AllocationId"]     params['bandwidth'] = BANDWIDTH_10     cbwp_repsonse_json = cbwp.create_common_bandwidth_package(params)     CommonUtil.log("create_common_bandwidth_package", cbwp_repsonse_json)       # 添加EIP到共享带宽包中     params['bandwidth_package_id'] = cbwp_repsonse_json['BandwidthPackageId']     cbwp_repsonse_json = cbwp.add_common_bandwidth_packageIp(params)     CommonUtil.log("add_common_bandwidth_packageIp", cbwp_repsonse_json)       # 查询共享带宽包     cbwp_repsonse_json = cbwp.describe_cbwp(params['bandwidth_package_id'])     CommonUtil.log("add_common_bandwidth_packageIp", cbwp_repsonse_json)       # 移除共享带宽包中的EIP     cbwp_repsonse_json = cbwp.remove_common_bandwidth_packageIp(params)     CommonUtil.log("remove_common_bandwidth_packageIp", cbwp_repsonse_json)       # 删除共享带宽包     params['force'] = True     cbwp_repsonse_json = cbwp.delete_common_bandwidth_package(params)     CommonUtil.log("delete_common_bandwidth_package", cbwp_repsonse_json)       # 释放EIP     eip_response_json = eip.release_eip_address(params)     CommonUtil.log("release_eip_address", eip_response_json)   if __name__ == '__main__':     sys.exit(main())

3. 进入eip_add_cbwp.py所在的目录，执行如下命令，实现EIP加入共享带宽。

   1	python eip_add_cbwp.py