CPython's bug in feature that nobody uses

Transcript

1. CPython's bug in feature that nobody uses Chiu-Hsiang Hsu wdv4758h@gmail.com

2. nickname : dv (currently) undergraduate student

3. CPython the de-facto reference Python implementation

4. tarfile module to r/w tar archives include those using gzip,

   bz2, lzma compression

5. tarfile module add CLI since Python 3.4

6. It’s similar to “tar” command in Unix-like system

7. Comparison tarfile module python -m tarfile -c files.tar files/ python

   -m tarfile -c files.tar.gz files/ python -m tarfile -c files.tar.bz2 files/ python -m tarfile -c files.tar.xz files/ tar command tar cf files.tar files/ tar zcf files.tar.gz files/ tar jcf files.tar.bz2 files/ tar Jcf files.tar.xz files/

8. tarfile module can choose compression algorithm automatically, but tar command

   can’t

9. seems a little bit smarter ?

10. But

11. It’s broken :(

12. It won’t use any compression algorithm !!! ? ? ?

13. None

14. tarfile.py with bug without bug

15. tarfile.py with bug without bug

16. I hate (love) those dot

17. fix in CPython 3.4.4 and 3.5

18. fix in CPython 3.4.4 and 3.5 but who cares this

    feature XD ?