TypeError: _convert_to_request_dict() missing 1 required positional argument 'endpoint_url'

[Lavanya1910]

We have a python code which installs the latest version of libraries(boto3 etc) and the code gets executed
Until the boto3 version update 1.24.96 the code was working as expected , but the later version which was released on 25/10/2022 the code is throwing error at code which calls the _convert_to_request_dict() using boto3 with the following error
TypeError: _convert_to_request_dict() missing 1 required positional argument 'endpoint_url'
After further analysis found the difference in the method definition of _convert_to_request_dict() in client.py class in the older and new versions of botocore
The old version definition is as follows(botocore 1.27.96)
def _convert_to_request_dict(
self, api_params, operation_model, context=None
):
If we observe the method signature it takes four arguments and it does not contain the attribute endpoint_url

**The Latest version definition is as follows(botocore 1.28.3 ) **
def _convert_to_request_dict(
self,
api_params,
operation_model,
endpoint_url,
context=None,
headers=None,
set_user_agent_header=True,
):
If we observe from the recent method signature , it takes 7 arguments and it contains endpoint_url as parameter and is mandatory to add when calling the same method
Hence understood the cause of the issue, so as a quick fix we have defined the older boto3 version and it works
But in the long run this could not solve the issue ,Could someone help us on how to mock the method parameter with values such as None or null which adds no difference but helps us from running into the issue

[jonemo]

Hi @Lavanya1910,

The method _convert_to_request_dict (code link) you mention is an internal private method of the class botocore.client.BaseClient in the botocore library. "Private method" here is in the Python sense where no method is truly private, but the leading _ signals that the method should not be called or imported externally. botocore provides the low-level interface to AWS services. boto3 depends on botocore.

Could you please provide more details on where the newly failing call to _convert_to_request_dict() is located? The endpoint_url argument has indeed been added in version 1.28.0 of botocore, but all internal references were changed accordingly. boto3 does not call _convert_to_request_dict directly (since it is a botocore internal method). Could the call to _convert_to_request_dict be in another package?