David Lyon írta:
Hi,
Try not opening the file in append mode (no "a+")
Inside the logic, there is already a seek to the end of the file
and the record counters at the start of the file need updating
too.
The first thing I tried is to use a filename instead of the file object
but it didn't work. Then I just tried "r+b" and it worked fine. Thank you!
BTW here is ist constructor:
def __init__(self, f, readOnly=False, new=False, ignoreErrors=False):
"""Initialize instance.
Arguments:
f:
Filename or file-like object.
new:
True if new data table must be created. Assume
data table exists if this argument is False.
readOnly:
if ``f`` argument is a string file will
be opend in read-only mode; in other cases
this argument is ignored. This argument is ignored
even if ``new`` argument is True.
headerObj:
`header.DbfHeader` instance or None. If this argument
is None, new empty header will be used with the
all fields set by default.
ignoreErrors:
if set, failing field value conversion will return
``INVALID_VALUE`` instead of raising conversion error.
"""
if isinstance(f, basestring):
# a filename
self.name = f
if new:
# new table (table file must be
# created or opened and truncated)
self.stream = file(f, "w+b")
else:
# tabe file must exist
self.stream = file(f, ("r+b", "rb")[bool(readOnly)])
else:
# a stream
self.name = getattr(f, "name", "")
self.stream = f
I have never seen such a construct before. Index a tuple with a boolean???
self.stream = file(f, ("r+b", "rb")[bool(readOnly)])
Best,
Laszlo
--
http://mail.python.org/mailman/listinfo/python-list
