dosubot[bot]
commented
6 months ago Hey @wb200, great to see you back! I hope you've been doing well since our last interaction. 😊
The error you're encountering, "TypeError: can only concatenate str (not "list") to str", typically occurs when you attempt to concatenate a string with a list, which is not allowed in Python. Given the context of using get_nodes_from_documents method on the node_parser object with LlamaParseJsonNodeParser in LlamaIndex v0.10.24 and LlamaParse v0.3.9, and the provided code snippets, there are no direct concatenation operations visible between a string and a list within the provided code.
However, the error might be originating from within the implementation of the get_nodes_from_documents method or any other method it calls, which is not visible in the provided context. If the method or any method it utilizes tries to concatenate the document's text (a string) with a list (possibly a parsed JSON object), this error would occur.
To resolve this issue without seeing the internal implementation of get_nodes_from_documents, ensure that any operation that combines the document text with other data converts lists (or any non-string data) to strings before concatenation. For example, if you have a list data and you want to concatenate it with a string text, you should convert data to a string first:
text = "some text"
data = ["data1", "data2"]
full_text = text + str(data) # Converts list to string before concatenationOr, if the list contains elements that should be concatenated as separate strings:
text = "some text"
data = ["data1", "data2"]
full_text = text + " ".join(data) # Joins list elements into a single string before concatenationWithout access to the internal logic of get_nodes_from_documents, this is a general advice on resolving the type error by ensuring proper data type handling when concatenating strings with other data types.
Regarding the get_nodes_and_objects method in the LlamaParseJsonNodeParser class, its purpose is to separate the given list of BaseNode instances into two distinct lists: one containing BaseNode instances that are not IndexNode objects, and another containing IndexNode objects along with their associated object data. This method facilitates the handling and processing of different types of nodes within a document, distinguishing between regular nodes and index nodes that reference other objects.
The get_base_nodes_and_mappings method in the LlamaParseJsonNodeParser class of the LlamaIndex v0.10.24 is to process a list of nodes, separating them into base nodes and a mapping of index nodes to their child nodes. This method is crucial for organizing the document's structure, especially when dealing with complex documents that include both text and embedded objects like tables. It ensures that each index node is correctly associated with its child nodes, facilitating the retrieval and manipulation of document content based on its hierarchical structure.
Unfortunately, I couldn't find the exact implementation of the get_nodes_from_documents method in the LlamaParseJsonNodeParser class of the LlamaIndex v0.10.24 and the purpose and implementation of the LlamaParse class and its get_json_result method in the LlamaParse v0.3.9 within the repository. It would be helpful if you could provide more information or context about these methods.
Sources
- llama-index-legacy/tests/node_parser/test_json.py
- llama-index-core/llama_index/core/node_parser/relational/base_element.py
wb200
Bug Description
Node creation using LlamaParseJsonNodeParser triggered following error:
Version
llama-indexd 0.10.24 / llama-parse 0.3.9
Steps to Reproduce
The PDF can be downloaded at this link: https://www.metalsx.com.au/wp-content/uploads/2024/02/FY23-MLX-Appendix-4E-and-Annual-Financial-Report_29-February-2024.pdf
The script below works for a whole list of PDFs. But I'm only getting an error for the one linked above.
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