Fix AttributeError with missing usage fields in AnthropicBedrock

[emcf]

Fixes #1292

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Important

Fix AttributeError in AnthropicBedrock usage update and unskip related tests.

• Behavior:
  • Fix AttributeError in update_total_usage() in utils.py by checking for field existence before updating input_tokens, output_tokens, cache_creation_input_tokens, and cache_read_input_tokens.
• Tests:
  • Unskip test_client_anthropic_bedrock_response() and test_async_client_anthropic_bedrock_response() in test_new_client.py.

^{This description was created by for 12135f6. It will automatically update as commits are pushed.}

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More details

• Looked at 75 lines of code in 2 files
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1. instructor/utils.py:167

• Draft comment:
  The PR resolves the issue by checking for the presence of fields before accessing them, which prevents the AttributeError. The changes in the test file ensure that the tests for the AnthropicBedrock client are now active and will run, verifying the fix.
• Reason this comment was not posted:
  Confidence changes required: 0%
  The PR resolves the issue by checking for the presence of fields before accessing them, which prevents the AttributeError. The changes in the test file ensure that the tests for the AnthropicBedrock client are now active and will run, verifying the fix.

2. tests/llm/test_new_client.py:183

• Draft comment:
  The unskipping of test_client_anthropic_bedrock_response and test_async_client_anthropic_bedrock_response tests is appropriate as it ensures the new behavior of handling missing fields in AnthropicUsage is verified.
• Reason this comment was not posted:
  Confidence changes required: 20%
  The PR modifies the update_total_usage function to handle missing fields in AnthropicUsage. This change should be accompanied by updated tests to ensure the new behavior is verified. The PR does update tests by unskipping the test_client_anthropic_bedrock_response and test_async_client_anthropic_bedrock_response tests, which is appropriate.

Workflow ID: wflow_mKUJcAyovRdQcvTd

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