Jean-Philippe Laverdure <[EMAIL PROTECTED]> added the comment:
Hello and sorry for the late reply.
Wolfgang: sorry about my misuse of the csv.DictReader constructor, that
was a mistake on my part. However, it still is not functionning as I
think it should/could. Look at this:
Using this content:
Sequence
AAGINRDSL
AAIANHQVL
and this piece of code:
f = open(sys.argv[-1], 'r')
dialect = csv.Sniffer().sniff(f.readline())
f.seek(0)
reader = csv.DictReader(f, dialect=dialect)
for line in reader:
print line
I get this result:
{'Sequen': 'AAGINRDSL', 'e': None}
{'Sequen': 'AAIANHQVL', 'e': None}
When I really should be getting this:
{'Sequence': 'AAGINRDSL'}
{'Sequence': 'AAIANHQVL'}
The fact is this code is in use in an application where users can submit
a .csv file produced by Excel for treatment. The file must contain a
"Sequence" column since that is what the treatment is run on. Now I had
to make the following changes to my code to account for the fact that
some users submit a single column file (since only the "Sequence" column
is required for treatment):
f = open(sys.argv[-1], 'r')
try:
dialect = csv.Sniffer().sniff(f.readline(), [',', '\t'])
f.seek(0)
reader = csv.DictReader(f, dialect=dialect)
except:
print '>>>caught csv sniff() exception'
f.seek(0)
reader = csv.DictReader(f)
for line in reader:
Do what I need to do
Which really feels like a patched use of a buggy implementation of the
Sniffer class
I understand the issues raised by Skip in regards to figuring out a
delimiter at all costs... But really, the Sniffer class should work
apropriately when a single column .csv file is submitted
__________________________________
Tracker <[EMAIL PROTECTED]>
<http://bugs.python.org/issue2078>
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