Drop bytes

Category: Data format

Status: Registered and callable in the CyberChef 11.3.0 compatibility inventory.

Input / output: ArrayBuffer → ArrayBuffer

What it does

Cuts a slice of the specified number of bytes out of the data. Negative values are allowed.

Note

Status here means the operation name is implemented and callable. It does not by itself promise byte-for-byte parity for every upstream option. See Compatibility and current status for the verified scope and known boundaries.

Arguments and options

Arguments are positional. Keep their order when using bake() or Pipeline.then().

Index	Name	UI type	PyChef default	Accepted values / format
`0`	Start	`number`	`0`	A Python integer or floating-point value
`1`	Length	`number`	`5`	A Python integer or floating-point value
`2`	Apply to each line	`boolean`	`False`	`True` or `False`

Recipe template

Important

This is a call template built from the documented defaults. Replace placeholder values such as empty keys, paths, patterns, or lookup data before running it.

from pychef import bake

input_value = b"example"
args = [0, 5, False]
result = bake(input_value, [{"op": 'Drop bytes', "args": args}])
print(result)

Pipeline example

from pychef import Pipeline

args = [0, 5, False]
transform = Pipeline().then('Drop bytes', *args)
result = transform(b"example")

Dedicated operation module

The registered entry point lives in pychef.operations.by_operation.drop_bytes. Direct calls receive the input value and a positional argument tuple:

from pychef.operations.by_operation.drop_bytes import run

result = run(b"example", tuple([0, 5, False]))

pychef.operations.by_operation.drop_bytes.run(value, args)

Run this operation using its shared internal implementation.

Parameters:

value (str | bytes)
args (Sequence[Any])

Return type:

str | bytes