如何以编程方式获取App Engine项目ID的位置前缀? [英] How can I obtain programatically the location prefix of an App Engine project ID?

查看：59 发布时间：2021/5/11 20:30:04 google-app-engine google-app-engine-python

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我正在python 3.7中使用Google App Engine标准，并且需要使用其键为数据存储区中的实体获取旧版安全网址.

I am using Google App Engine standard in python 3.7 and need to obtain the legacy safe url for an Entity in the Datastore using its Key.

为了实现这一点，我需要知道location_prefix.

In order to achieve this I need to know the location_prefix.

如何在Python中以编程方式获取给定项目ID的值?

How can I obtain that value programatically in Python for a given project id?

这是您要寻找的吗?:

Is this what you are looking for?: Retrieving Entities from Keys

您还可以使用实体的密钥来获取适合的编码字符串嵌入网址:

You can also use an entity's key to obtain an encoded string suitable for embedding in a URL:

url_string = sandy_key.urlsafe()

这将产生类似于"agVoZWxsb3IPCxIHQWNjb3VudBiZiwIM"的结果，以后可用于重建密钥并检索原始实体:

This produces a result like 'agVoZWxsb3IPCxIHQWNjb3VudBiZiwIM' which can later be used to reconstruct the key and retrieve the original entity:

sandy_key = ndb.Key(urlsafe=url_string)
sandy = sandy_key.get()

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