# FileExtractionInput

## class nominal.core.FileExtractionInput(name, environment_variable, description=None, file_suffixes=(), required=False)

Bases: [`object`](https://docs.python.org/3/builtins/functions.html#object "(in Python v3.15)")

An input file the extractor consumes, exposed to the container via an environment variable.

### name: str

Human-readable name of the input.

### environment_variable: str

Environment variable through which the container receives the input file’s path.

### description: str | None = None

Human-readable description of the input.

### file_suffixes: Sequence[str] = ()

File suffixes this input accepts (e.g. “csv”, “mcap”); empty accepts any file.

### required: bool = False

Whether an ingest must provide this input to run the extractor.