Update Python code formatting, configuration loading, and local model additions

[barnett-yuxiang]

User description

1. Code Formatting:

   • Standardized Python code formatting across multiple files to align with PEP 8 guidelines. This includes adjustments to whitespace, line breaks, and inline comments.

2. Configuration Loader Enhancements:

   • Enhanced the get_settings function in config_loader.py to provide more robust handling of settings retrieval. Added detailed documentation to improve code maintainability and clarity.

3. Model Addition in init.py:

   • Added a new model "ollama/llama3" with a token limit to the MAX_TOKENS dictionary in __init__.py to support new AI capabilities and configurations.

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PR Type

Enhancement, Documentation

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Description

• Standardized Python code formatting across multiple files to align with PEP 8 guidelines.
• Enhanced the get_settings function in config_loader.py with detailed docstrings for better maintainability.
• Added a new model llama/llama3 with a token limit to the MAX_TOKENS dictionary in __init__.py.
• Improved error logging formats across various files.

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Changes walkthrough 📝

	Relevant files
Enhancement	10 files pr_agent.py Code formatting and logging improvements in `pr_agent.py`. pr_agent/agent/pr_agent.py Fixed inline comment spacing issues. Improved error logging format for forbidden CLI arguments. +5/-3      __init__.py Added new model `llama/llama3` to `MAX_TOKENS`.                    pr_agent/algo/init.py Added new model llama/llama3 with a token limit to the MAX_TOKENS dictionary. +2/-1      base_ai_handler.py Code formatting improvements in `base_ai_handler.py`.        pr_agent/algo/ai_handlers/base_ai_handler.py Added a newline for better readability. Fixed spacing issues in method definitions. +2/-2      langchain_ai_handler.py Code formatting and logging improvements in langchain_ai_handler.py. pr_agent/algo/ai_handlers/langchain_ai_handler.py Fixed inline comment spacing issues. Added a newline for better readability. Improved error logging format. +9/-7      litellm_ai_handler.py Code formatting improvements in `litellm_ai_handler.py`.  pr_agent/algo/ai_handlers/litellm_ai_handler.py Fixed spacing issues in method definitions. +2/-2      openai_ai_handler.py Code formatting and logging improvements in `openai_ai_handler.py`. pr_agent/algo/ai_handlers/openai_ai_handler.py Added a newline for better readability. Fixed spacing issues in method definitions. Improved error logging format. +5/-4      file_filter.py Code formatting improvements in `file_filter.py`.                pr_agent/algo/file_filter.py Added a newline for better readability. Fixed inline comment spacing issues. +2/-1      utils.py Code formatting improvements in `utils.py`.                            pr_agent/algo/utils.py Fixed inline comment spacing issues. +1/-1      cli.py Code formatting improvements in `cli.py`.                                pr_agent/cli.py Added newlines for better readability. +3/-0      pr_reviewer.py Code formatting and logging improvements in `pr_reviewer.py`. pr_agent/tools/pr_reviewer.py Added newlines for better readability. Fixed inline comment spacing issues. Improved error logging format. +6/-6
Documentation	1 files config_loader.py Enhanced documentation and fixed variable assignment in config_loader.py. pr_agent/config_loader.py Added detailed docstrings for better code maintainability. Fixed variable assignment issues. +11/-2

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PR Review 🔍

⏱️ Estimated effort to review [1-5]	2, because the changes are mostly stylistic and straightforward, involving code formatting and minor enhancements. The PR is well-documented and the changes are not complex.
🏅 Score	85
🧪 Relevant tests	No
⚡ Possible issues	No
🔒 Security concerns	No
🔀 Multiple PR themes	No

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PR Code Suggestions ✨

Category	Suggestion	Score
Best practice	Replace the bare except clause with except ImportError to catch only import-related errors Instead of using a bare except clause, specify the exception type to catch only the relevant exceptions and avoid masking other unexpected errors. pr_agent/algo/ai_handlers/langchain_ai_handler.py [4] -except: # we don't enforce langchain as a dependency, so if it's not installed, just move on +except ImportError: # we don't enforce langchain as a dependency, so if it's not installed, just move on Suggestion importance[1-10]: 8 Why: Specifying the exception type is a best practice to avoid catching unintended exceptions, which can improve error handling and debugging.	8
Enhancement	Include the stack trace in the error log for better debugging The get_logger().error call should use exc_info=True to include the stack trace in the log for better debugging. pr_agent/algo/ai_handlers/openai_ai_handler.py [67] -get_logger().error("Unknown error during OpenAI inference: ", e) +get_logger().error("Unknown error during OpenAI inference: ", exc_info=True) Suggestion importance[1-10]: 7 Why: Including the stack trace in the log is a significant enhancement for debugging, making it easier to trace back the errors.	7
Possible issue	Initialize the ai_handler parameter with None and assign LiteLLMAIHandler if not provided The ai_handler parameter in the PRAgent class constructor should be initialized with None as the default value instead of LiteLLMAIHandler. This avoids potential issues if LiteLLMAIHandler is not available or needs to be dynamically assigned later. pr_agent/agent/pr_agent.py [51-52] -def __init__(self, ai_handler: partial[BaseAiHandler,] = LiteLLMAIHandler): - self.ai_handler = ai_handler # will be initialized in run_action +def __init__(self, ai_handler: Optional[partial[BaseAiHandler,]] = None): + self.ai_handler = ai_handler or LiteLLMAIHandler # will be initialized in run_action Suggestion importance[1-10]: 6 Why: The suggestion to initialize ai_handler with None is valid for flexibility and error handling, but it's not a critical issue since the default handler is provided.	6
	Move the parse_args method call after initializing self.incremental to avoid potential issues The parse_args method call should be moved after initializing self.incremental to avoid potential issues if self.incremental is used within parse_args. pr_agent/tools/pr_reviewer.py [38-40] +self.git_provider = get_git_provider()(pr_url, incremental=self.incremental) self.parse_args(args) # -i command -self.git_provider = get_git_provider()(pr_url, incremental=self.incremental) Suggestion importance[1-10]: 5 Why: The suggestion is logically sound to ensure all dependencies are initialized before they are used, but the impact of this change is moderate unless parse_args explicitly depends on self.incremental.	5

[mrT23]

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