ZipFile.writestr doesn't behave like Path.write_*

Feature or enhancement

Proposal:

Given that ZipPath doesn't provide a write_text or write_bytes, I'm trying to use ZipFile.writestr and noticed that when the data you're trying to write isn't the right type it still stores an empty entry. I didn't expect side effects when it failed this fundamentally to get the data.

import zipfile
with zipfile.ZipFile("foo.zip", "w") as z:
  z.writestr("x", ())
  print(z.namelist()) # -> "x"

Notably, Path.write_text behaves the way I'd expect -- it has to construct a memoryview successfully first before opening the file.

from pathlib import Path
Path("x").write_bytes(()) # -> neither creates nor truncates

@jaraco I assume ZipPath not supporting writes is intentional?

Has this already been discussed elsewhere?

This is a minor feature, which does not need previous discussion elsewhere

Links to previous discussion of this feature:

No response

この issue では実装ファイルもテストも指定されていません。まず zipfile.ZipFile.writestr の例を再現し、無効なデータについて pathlib.Path.write_bytes と比較します。関連する標準ライブラリの実装とテストを調べます。完了条件は、無効な入力で例外が発生し、アーカイブエントリが作成も切り詰めもされないことです。