Python 2.7 云扳手，创建数据库客户端，快速入门指南，错误

我正在尝试谷歌云扳手的“Python中的云扳手入门”指南

我已经创建了实例数据库e.t.c

我已经到了“创建数据库客户端”部分

我们在防火墙后面操作，并且必须设置代理设置，我们已经使用Gsutil、BQ命令行e.t.c成功地完成了这项工作

设置代理设置后，请尝试并执行quickstart.py 我犯了一个错误

E0620 08:35:32.703000000  5020 src/core/ext/filters/client_channel/uri_parser.c:60] bad uri.scheme: 'xx.xxx.xxx.xxx:xx'

E0620 08:35:32.703000000  5020 src/core/ext/filters/client_channel/uri_parser.c:66]                  ^ here

E0620 08:35:32.703000000  5020 src/core/ext/filters/client_channel/http_proxy.c:56] cannot parse value of 'http_proxy' env var

它位于数据库的

行。执行sql（'SELECT 1'）

，所有操作都会出错

如果您还没有看到Quickstart示例，下面是代码

#!/usr/bin/env python

# Copyright 2016 Google Inc. All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.


def run_quickstart():
# [START spanner_quickstart]
# Imports the Google Cloud Client Library.
from google.cloud import spanner

# Instantiate a client.
spanner_client = spanner.Client()

# Your Cloud Spanner instance ID.
instance_id = 'im-spanner'

# Get a Cloud Spanner instance by ID.
instance = spanner_client.instance(instance_id)

# Your Cloud Spanner database ID.
database_id = 'd42'

# Get a Cloud Spanner database by ID.
database = instance.database(database_id)

# Execute a simple SQL statement.
results = database.execute_sql('SELECT 1')

for row in results:
    print(row)
# [END spanner_quickstart]


if __name__ == '__main__':
    run_quickstart()

我已经仔细检查了代理详细信息，它们是正确的。

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有人能帮忙吗？

您是否已将http\U代理变量设置为指向您的代理？有关信息，请参阅。如果使用gRPC通过代理访问云库，则需要设置此变量以向gRPC库提供代理的URI

是否已将http_proxy变量设置为指向您的代理？有关信息，请参阅。如果使用gRPC通过代理访问云库，则需要设置此变量以向gRPC库提供代理的URI