parameters: (header: bytes)
return_statement: return header[4:36]
docstring: Extracts the previous block's hash from a header (little-endian)
docstring_summary: Extracts the previous block's hash from a header (little-endian)
docstring_tokens: Extracts the previous block s hash from a header ( little - endian )
function: def extract_prev_block_le(header: bytes) -> bytes:
      '''Extracts the previous block's hash from a header (little-endian)'''
      return header[4:36]
function_tokens: def extract_prev_block_le ( header : bytes ) -> bytes : return header [ 4 : 36 ]