ethereum.utils.byte

Utility Functions For Byte Strings.

.. contents:: Table of Contents :backlinks: none :local:

Introduction

Byte specific utility functions used in this specification.

left_pad_zero_bytes

Left pad zeroes to value if its length is less than the given size.

Parameters

value : The byte string that needs to be padded. size : The number of bytes that need to be padded.

Returns

left_padded_value: ethereum.base_types.Bytes left padded byte string of given size.

def left_pad_zero_bytes(​value: Bytes, ​​size: int | FixedUnsigned | Uint​) -> Bytes:
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    return value.rjust(int(size), b"\x00")

right_pad_zero_bytes

Right pad zeroes to value if its length is less than the given size.

Parameters

value : The byte string that needs to be padded. size : The number of bytes that need to be padded.

Returns

right_padded_value: ethereum.base_types.Bytes right padded byte string of given size.

def right_pad_zero_bytes(​value: Bytes, ​​size: int | FixedUnsigned | Uint​) -> Bytes:
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    return value.ljust(int(size), b"\x00")