Issue 1517887: zipfile appends broken in 2.5b1 (original) (raw)

Discovered this while implementing a patch for 1514451. It doesn't matter if compression is used or not, the bug occurs either way. Test case attached. Output as below:

tom@chip:/python_bug$ ls bug.py file_a.txt file_c.txt tom@chip:/python_bug$ python -V Python 2.4.3 tom@chip:/python_bug$ python bug.py file a file b file c file d tom@chip:/python_bug$ python2.5 -V Python 2.5b1 tom@chip:/python_bug$ python2.5 bug.py file a file b Traceback (most recent call last): File "bug.py", line 16, in print f.read('file_c.txt').strip() File "/usr/local/python2.5/lib/python2.5/zipfile.py", line 482, in read raise BadZipfile, "Bad magic number for file header" zipfile.BadZipfile: Bad magic number for file header tom@chip:/python_bug$