> ## Documentation Index > Fetch the complete documentation index at: https://site.aspect.build/llms.txt > Use this file to discover all available pages before exploring further. # Readable `function` **Readable.read** 
        
          def Readable.read(
          size: int = ...,
          /
          ) -> bytes
Reads bytes from this source. If `size` is provided, reads up to that many bytes. If `size` is not provided, reads until EOF. Returns the bytes read. `function` **Readable.read\_to\_string** 
        
          def Readable.read\_to\_string() -> str
Reads all bytes until EOF in this source and returns a string. If successful, this function will return all bytes as a string. `property` **Readable.is\_tty** 
        
          Readable.is\_tty: bool
Returns true if the underlying stream is connected to a terminal/tty.