AttributeError: 'BaseMessageParam' Object Has No Attribute 'get'

AttributeError: 'BaseMessageParam' object has no attribute 'get' in Mirascope v1.21.0+

In Mirascope v1.21.0 and later versions, a critical issue arises when a BaseMessageParam object is treated as a dictionary with the get method. However, this object does not possess such a method, resulting in an AttributeError when utilizing Mirascope's LLM functionality directly or through integration with Lilypad.

To replicate this issue, follow these steps:

1. Install Mirascope v1.21.0 or newer: Ensure you have the latest version of Mirascope installed.
2. Set up the appropriate API keys: Configure the necessary API keys for Mirascope.
3. Run the minimal example: Execute the following code snippet:

from mirascope import llm

@llm.call("openai","gpt-4o-mini")
def generate_text(prompt: str) -> str:
    return prompt

response = generate_text("Hello, world!")
print(response.common_messages)

When running the above code, you will encounter the following error:

AttributeError: 'BaseMessageParam' object has no attribute 'get'
  File ".../mirascope/core/openai/_utils/_message_param_converter.py", line 41, in from_provider
    content = message_param.get("content")

The complete error traceback is as follows:

Traceback (most recent call last):
  File "/Users/koudai/Library/Application Support/JetBrains/PyCharm2024.3/scratches/scratch_214.py", line 8, in <module>
    print(response.common_messages)
          ^^^^^^^^^^^^^^^^^^^^^^^^
  File "/Users/koudai/PycharmProjects/lilypad/.venv/lib/python3.12/site-packages/pydantic/main.py", line 888, in __getattr__
    return super().__getattribute__(item)  # Raises AttributeError if appropriate
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/Users/koudai/PycharmProjects/lilypad/.venv/lib/python3.12/site-packages/mirascope/core/base/call_response.py", line 324, in common_messages
    return self._message_converter.from_provider(self.messages)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/Users/koudai/PycharmProjects/lilypad/.venv/lib/python3.12/site-packages/mirascope/core/openai/_utils/_message_param_converter.py", line 41, in from_provider
    content = message_param.get("content")
              ^^^^^^^^^^^^^^^^^
  File "/Users/koudai/PycharmProjects/lilypad/.venv/lib/python3.12/site-packages/pydantic/main.py", line 891, in __getattr__
    raise AttributeError(f'{type(self).__name__!r} object has no attribute {item!r}')
AttributeError: 'BaseMessageParam' object has no attribute 'get'

Upon executing the code, you will notice that:

• The API call succeeds and returns a response.
• However, when attempting to access common_messages or convert messages, an error is thrown because BaseMessageParam is being treated as a dictionary when it's not.

The code should run without errors and properly process the response messages.

• Mirascope: v1.21.0
• Python 3.12
• This issue also affects integration with Lilypad.

The error appears to be in the _message_param_converter.py file, where it's trying to use dictionary-style access on a BaseMessageParam object. This likely needs to be updated to use proper object attribute access instead of dictionary-style access.

This bug affects both direct usage of Mirascope and integration with other libraries like Lilypad.

Python, Mirascope & OS Versions, related packages (not required)

# Python version
python = "3.12"

# Mirascope version
mirascope = "1.21.0"

# OS version
os = "macOS 12.6.3"

# Related packages
packages = ["pydantic", "mirascope", "lilypad"]

To resolve this issue, you can update the _message_param_converter.py file to use proper object attribute access instead of dictionary-style access. This will ensure that the BaseMessageParam object is treated correctly, and the code will run without errors.
Q&A: AttributeError: 'BaseMessageParam' object has no attribute 'get' in Mirascope v1.21.0+

A: In Mirascope v1.21.0 and later versions, a BaseMessageParam object is being treated as a dictionary with the get method, but this object does not possess such a method. This results in an AttributeError when utilizing Mirascope's LLM functionality directly or through integration with Lilypad.

A: To replicate this issue, follow these steps:

1. Install Mirascope v1.21.0 or newer.
2. Set up the appropriate API keys.
3. Run the minimal example:

from mirascope import llm

@llm.call("openai","gpt-4o-mini")
def generate_text(prompt: str) -> str:
    return prompt

response = generate_text("Hello, world!")
print(response.common_messages)

A: When running the above code, you will encounter the following error:

AttributeError: 'BaseMessageParam' object has no attribute 'get'
  File ".../mirascope/core/openai/_utils/_message_param_converter.py", line 41, in from_provider
    content = message_param.get("content")

A: The complete error traceback is as follows:

Traceback (most recent call last):
  File "/Users/koudai/Library/Application Support/JetBrains/PyCharm2024.3/scratches/scratch_214.py", line 8, in <module>
    print(response.common_messages)
          ^^^^^^^^^^^^^^^^^^^^^^^^
  File "/Users/koudai/PycharmProjects/lilypad/.venv/lib/python3.12/site-packages/pydantic/main.py", line 888, in __getattr__
    return super().__getattribute__(item)  # Raises AttributeError if appropriate
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/Users/koudai/PycharmProjects/lilypad/.venv/lib/python3.12/site-packages/mirascope/core/base/call_response.py", line 324, in common_messages
    return self._message_converter.from_provider(self.messages)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/Users/koudai/PycharmProjects/lilypad/.venv/lib/python3.12/site-packages/mirascope/core/openai/_utils/_message_param_converter.py", line 41, in from_provider
    content = message_param.get("content")
              ^^^^^^^^^^^^^^^^^
  File "/Users/koudai/PycharmProjects/lilypad/.venv/lib/python3.12/site-packages/pydantic/main.py", line 891, in __getattr__
    raise AttributeError(f'{type(self).__name__!r} object has no attribute {item!r}')
AttributeError: 'BaseMessageParam' object has no attribute 'get'

A: Upon executing the code, you will notice that:

• The API call succeeds and returns a response.
• However, when attempting to access common_messages or convert messages, an error is thrown because BaseMessageParam is being treated as a dictionary when it's not.

A: The code should run without errors and properly process the response messages.

A: The environment details are as follows:

• Mirascope: v1.21.0
• Python 3.12
• This issue also affects integration with Lilypad.

A: The error appears to be in the _message_param_converter.py file, where it's trying to use dictionary-style access on a BaseMessageParam object. This likely needs to be updated to use proper object attribute access instead of dictionary-style access.

A: To resolve this issue, you can update the _message_param_converter.py file to use proper object attribute access instead of dictionary-style access. This will ensure that the BaseMessageParam object is treated correctly, and the code will run without errors.