Python 3.9 is now generally available.

google.appengine.api.appinfo.LoadAppInclude

Loads a single AppInclude object where one and only one is expected.

app_include A file-like object or string. The argument is set to a string, the argument is parsed as a configuration file. If the argument is set to a file-like object, the data is read and parsed.

An instance of AppInclude as loaded from a YAML file.

EmptyConfigurationFile If there are no documents in the YAML file.
MultipleConfigurationFile If there is more than one document in the YAML file.