Count Tokens for Bedrock
Problem
I am getting following when I am trying to calculate tokens in bedrock. AttributeError: 'AnthropicBedrock' object has no attribute 'count_tokens' It seems like there is no implementation for it. Thanks.
Error Output
Error: 'AnthropicBedrock' object has no attribute 'count_tokens'
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1 Fix
Implement Token Counting Method for AnthropicBedrock
The error occurs because the 'AnthropicBedrock' class does not have a method named 'count_tokens'. This indicates that the functionality to count tokens has not been implemented in the class, leading to the AttributeError when attempting to call this method.
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- 1
Define count_tokens Method
Add a method named 'count_tokens' to the 'AnthropicBedrock' class. This method should accept a string input and return the number of tokens in that string based on the tokenization rules used by the model.
pythondef count_tokens(self, text): # Example tokenization logic, adjust based on actual model requirements return len(text.split()) - 2
Update Class Definition
Ensure that the 'count_tokens' method is included in the class definition of 'AnthropicBedrock'. This will make the method available for instances of the class.
pythonclass AnthropicBedrock: def __init__(self): pass def count_tokens(self, text): return len(text.split()) - 3
Test the count_tokens Method
Create unit tests to verify that the 'count_tokens' method works correctly. Test with various input strings to ensure accurate token counting.
pythondef test_count_tokens(): bedrock = AnthropicBedrock() assert bedrock.count_tokens('Hello world') == 2 assert bedrock.count_tokens('This is a test') == 4 - 4
Document the New Method
Update the documentation for the 'AnthropicBedrock' class to include details about the 'count_tokens' method, including its parameters and return value.
Validation
Run the unit tests created in step 3. If all tests pass without errors, the implementation is confirmed to be successful. Additionally, manually test the 'count_tokens' method with various strings to ensure it returns the expected token counts.
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Submitted by
Alex Chen
2450 rep