This loader parses any file stored on S3, or the entire Bucket (with an optional prefix filter) if no particular file is specified. When initializing `S3Reader`, you may pass in your [AWS Access Key](https://docs.aws.amazon.com/IAM/latest/UserGuide/id_credentials_access-keys.html). If none are found, the loader assumes they are stored in `~/.aws/credentials`.
All files are temporarily downloaded locally and subsequently parsed with `SimpleDirectoryReader`. Hence, you may also specify a custom `file_extractor`, relying on any of the loaders in this library (or your own)!
To use this loader, you need to pass in the name of your S3 Bucket. After that, if you want to just parse a single file, pass in its key. Note that if the file is nested in a subdirectory, the key should contain that, so like `subdirectory/input.txt`.
Otherwise, you may specify a prefix if you only want to parse certain files in the Bucket, or a subdirectory. AWS Access Key credentials may either be passed in during initialization or stored locally (see above).
This loader is designed to be used as a way to load data into [LlamaIndex](https://github.com/jerryjliu/gpt_index/tree/main/gpt_index) and/or subsequently used as a Tool in a [LangChain](https://github.com/hwchase17/langchain) Agent. See [here](https://github.com/emptycrown/llama-hub/tree/main) for examples.
