Hmmm... Works for me.
% python
Python 2.7.6+ (2.7:db842f730432, May 9 2014, 23:53:26)
[GCC 4.2.1 Compatible Apple LLVM 5.1 (clang-503.0.40)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> with open("coconutBattery.csv", "rb") as f:
... r = csv.DictReader(f)
... x = r.fieldnames
...
autoloading csv
>>> x
['date', 'capacity', 'loadcycles']
(Ignore the "autoloading" message. I use an autoloader in interactive
mode which comes in handy when I forget to import a module, as I did
here.)
It also works without assigning r.fieldnames to a new variable:
>>> with open("coconutBattery.csv", "rb") as f:
... r = csv.DictReader(f)
... r.fieldnames
...
['date', 'capacity', 'loadcycles']
>>> r.fieldnames
['date', 'capacity', 'loadcycles']
I think you're going to have to paste another example session to show
us what you might have done differently.
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