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binhex Module Complexity¶
binhex converts files to and from the legacy BinHex 4.0 format.
Complexity Reference¶
Here, n is the total input and output byte count. Bounds describe successful file conversion with fixed-length paths; space is auxiliary memory, excluding files on disk and caller-provided stream storage.
| Operation | Time | Space | Notes |
|---|---|---|---|
binhex(input, output) |
O(n) | O(1) | Encodes in bounded chunks |
hexbin(input, output) |
O(n) | O(1) | Decodes in bounded chunks |
Error(message) |
O(1) | O(1) | Stores a reference to the supplied message |
Removed in Python 3.11
Deprecated in Python 3.9 and removed in Python 3.11. This page covers the
exported API (__all__) available in Python 3.10; implementation helpers
and the alternative coder/decoder classes are outside its scope.
File Conversion¶
Run this example on Python 3.10. Invalid BinHex data can raise Error.
import binhex
from pathlib import Path
from tempfile import TemporaryDirectory
with TemporaryDirectory() as directory:
source = Path(directory) / "input.bin"
encoded = Path(directory) / "encoded.hqx"
restored = Path(directory) / "restored.bin"
source.write_bytes(b"hello\x00world")
binhex.binhex(str(source), str(encoded)) # O(n)
binhex.hexbin(str(encoded), str(restored)) # O(n)
assert restored.read_bytes() == source.read_bytes()