3.0.0 Migration Guide
The 3.0 release of the google-cloud-translate
client is a significant upgrade based on a next-gen code generator, and includes substantial interface changes. Existing code written for earlier versions of this library will likely require updates to use this version. This document describes the changes that have been made, and what you need to do to update your usage.
If you experience issues or have questions, please file an issue.
Supported Python Versions
WARNING: Breaking change
The 3.0.0 release requires Python 3.6+.
Method Calls
WARNING: Breaking change
Methods expect request objects. We provide a script that will convert most common use cases.
- Install the library and
libcst
.
python3 -m pip install google-cloud-translate libcst
- The script
fixup_translation_{version}_keywords.py
is shipped with the library. It expects an input directory (with the code to convert) and an empty destination directory.
$ fixup_translation_v3_keywords.py --input-directory .samples/ --output-directory samples/
Before:
from google.cloud import translate
client = translate.TranslationServiceClient()
parent = client.location_path("<PROJECT_ID>", "<LOCATION>")
text = "Good morning!"
response = client.translate_text(
parent=parent,
contents=[text],
mime_type="text/plain",
source_language_code="en-US",
target_language_code="fr",
)
After:
from google.cloud import translate
client = translate.TranslationServiceClient()
parent = "projects/<PROJECT_ID>/locations/<LOCATION>"
text = "Good morning!"
response = client.translate_text(
request={
"parent": parent,
"contents": [text],
"mime_type": "text/plain",
"source_language_code": "en-US",
"target_language_code": "fr"
}
)
More Details
In google-cloud-translate<3.0.0
, parameters required by the API were positional parameters and optional parameters were keyword parameters.
Before:
def translate_text(
self,
contents,
target_language_code,
parent,
mime_type=None,
source_language_code=None,
model=None,
glossary_config=None,
labels=None,
retry=google.api_core.gapic_v1.method.DEFAULT,
timeout=google.api_core.gapic_v1.method.DEFAULT,
metadata=None,
):
In the 3.0.0 release, all methods have a single positional parameter request
. Method docstrings indicate whether a parameter is required or optional.
Some methods have additional keyword only parameters. The available parameters depend on the google.api.method_signature
annotation specified by the API producer.
After:
def translate_text(
self,
request: translation_service.TranslateTextRequest = None,
*,
parent: str = None,
target_language_code: str = None,
contents: Sequence[str] = None,
model: str = None,
mime_type: str = None,
source_language_code: str = None,
retry: retries.Retry = gapic_v1.method.DEFAULT,
timeout: float = None,
metadata: Sequence[Tuple[str, str]] = (),
) -> translation_service.TranslateTextResponse:
NOTE: The
request
parameter and flattened keyword parameters for the API are mutually exclusive. Passing both will result in an error.
Both of these calls are valid:
response = client.translate_text(
request={
"parent": parent,
"target_language_code": target_language_code,
"contents": contents
}
)
response = client.translate_text(
parent=parent,
target_language_code=target_language_code,
contents=contents
)
This call is invalid because it mixes request
with a keyword argument target_language_code
. Executing this code
will result in an error.
response = client.translate_text(
request={
"parent": parent,
"contents": contents,
},
target_language_code=target_language_code
)
Enums and types
WARNING: Breaking change
The submodule enums
(containing enum classes for long running operation State) has been removed.
The submodule types
is still present. When using the primary version module alias (translate
)
it is possible to access the types classes directly.
from google.cloud import translate # the primary version is imported by default
client = translate.TranslationServiceClient()
glossary_config = client.TranslateTextGlossaryConfig(
glossary=glossary_path
)
When a specific version is imported, the full module name must be specified to access types classes.
from google.cloud import translate_v3beta1 as translate
client = translate.TranslationServiceClient()
glossary_config = client.types.TranslateTextGlossaryConfig(
glossary=glossary_path
)