Test your knowledge: ZIP archives with zipfile

Review

1. Which statement correctly distinguishes ZipFile.write() from ZipFile.writestr()?

   write() stores an existing file. writestr() accepts str or bytes and associates it with an archive member name.
2. You must fail rather than overwrite an existing archive. Which ZipFile mode expresses that intent?

   Mode x creates a new archive exclusively and raises FileExistsError if the target already exists.
3. Which call provides ZipInfo objects so you can inspect filenames, uncompressed sizes, and compression methods?

   infolist() returns ZipInfo objects for the archive entries. namelist() returns names only.
4. After calling archive.read("message.txt"), what should a program do before treating the result as UTF-8 text?

   Decode the bytes using the encoding of the original text; str(bytes) displays a bytes representation rather than decoding it.
5. What does testzip() verify?

   testzip() can detect certain corruption through headers and CRCs; it is not a malware scan, resource-limit check, or trust decision.
6. Which statement about ZIP compression is accurate?

   ZIP_STORED does not compress data. Compression methods may depend on optional modules and other tools may not support every method.
7. You receive an archive from an unknown source. Which is the safest general starting point?

   zipfile sanitizes some member paths but does not guarantee protection from all traversal, overwrite, or resource-exhaustion risks. Isolate and inspect input before extraction.
8. A ZIP file contains two entries with the same member name. How can code target the specific entry returned by infolist()?

   The methods accept a ZipInfo object, which disambiguates entries even when member names are duplicated.
9. Which mode adds new members to an existing ZIP archive while preserving its existing entries?

   Mode a appends entries; mode w truncates and rewrites an existing archive.