Is there a way that I can parse a single comma delimited string without using anything fancy like a csv.reader(..) ? I can use the split(',')
function but that doesn't work when a valid column value contains a comma itself. The csv library has readers for parsing CSV files which correctly handle the aforementioned special case, but I can't use those because I need to parse just a single string. However if the Python CSV allows parsing a single string itself then that's news to me.
Take a closer look at the documentation for the csv
module, which
says:
reader(...)
csv_reader = reader(iterable [, dialect='excel']
[optional keyword args])
for row in csv_reader:
process(row)
The "iterable" argument can be any object that returns a line
of input for each iteration, such as a file object or a list. The
optional "dialect" parameter is discussed below. The function
also accepts optional keyword arguments which override settings
provided by the dialect.
So if you have string:
>>> s = '"this is", "a test", "of the csv", "parser"'
And you want "an object that returns a line of input for each iteration", you can just wrap your string in a list:
>>> r = csv.reader([s])
>>> list(r)
[['this is', 'a test', 'of the csv parser']]
And that's how you parse a string with the csv
module.
You can still parse a single string with csv
. Use StringIO to write a string buffer (also known as memory files):
import csv
from StringIO import StringIO
s = "your string"
buff = StringIO(s)
reader = csv.reader(buff)
for line in reader:
print(line)
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