I need record the starting offsets of csv rows in a database for fast seeking
later.
Unfortunately, using any csv.reader() (or DictReader) tries to cache, which
means:
example_Data = "'data
0123456789ABCDE
1123456789ABCDE
2123456789ABCDE
3123456789ABCDE
...
'''
for line in reader:
offsets[row] = f.tell()
is not possible. With my example data , offsets are reported as [0, 260, 260,
260...] they should be [0x00, 0x00,0x15, 0x25, ...] (sample data is 16 byte
rows after a 5 byte header (just for now))
I saw in one of PEP-305's references a mention of csv.parser() which won't
return a row until parsing is complete. This is ideal since some lines will
have quoted text containing commas and new lines. I don't want to re-write the
parser, since later usage will use csvDictReader, so we need to identically
parse rows. How can I do that with the Python 2.7 csv module?
Or how can I accomplish this task through other means?
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