First time here? We are a friendly community of Power Systems Engineers. Check out the FAQ!
I have been playing with the csv.reader module in reading a column in the following format.
[‘filename1’,
‘filename2’,
………..
]However, I end up with getting an extra-bracket which I don’t want
[ ( ‘filename1’,
‘filename2’,
………….)
]Just wondering whether you want to suggest me a pythonic way of getting rid of the “ ( “ and “ )”
Your list has a tuple as its first element. To grab the tuple, just you need to get the 0-th element from the list:
>>> data = [(‘filename1’,
... ‘filename2’,
... ...)]
>>> filenames = data[0]
>>> print filenames
(‘filename1’,
‘filename2’,
...)As tuples can't be altered once they have been created, if you want to change the data in the tuple, you will need to convert it to a list first:
>>> filenames = list(filenames)
>>> print filenames
[‘filename1’,
‘filename2’,
...]
Asked: Jun 20 '12
Seen: 519 times
Last updated: Jun 26 '12
whit loves you. Content on this site is licensed under a Creative Commons Attribution Share Alike 3.0 license.
Good question
Can you share a bit more information? csv.reader.next() returns a list of values each row like [col1, col2, col3]. I'm not sure how you're getting [ (col1, col2, col3) ]
@chip. If you do something like list(reader) it will create a list of tuples, rather than returning a single row. I suspect that is what is going on here.