Figuring out what dependencies are needed
wuwei23 at gmail.com
Thu Dec 12 06:48:42 CET 2013
On 11/12/2013 10:44 PM, sal at nearlocal.com wrote:
> I'm a Python beginner. I want to use it for stats work, so I downloaded Anaconda which has several of the popular libraries already packaged for Mac OS X.
> Now I'd like to use the backtesting package from zipline (zipline.io), but while running the test script in iPython, I receive the following error:
> AssertionError Traceback (most recent call last)
> <ipython-input-6-f921351f78e2> in <module>()
> ----> 1 data = load_from_yahoo()
> 2 dma = DualMovingAverage()
> 3 results = dma.run(data)
> 1) I assume that I'm missing some packages that aren't included in Anaconda, but how do I know which ones to upload?
You're not missing a package, you're missing parameters. This is the
signature for load_from_yahoo:
The first thing it does is call a helper function
`_load_raw_yahoo_data`, which has this assertion:
assert indexes is not None or stocks is not None, """
As you're passing no parameters into `load_from_yahoo`, both `indexes`
and `stocks` default to None, so the assertion fails. Take a look at the
examples in the zipline library to see what it is expecting.
> 2) Often I'll just unzip a library file and put the main folder in the iPython folder, but I notice there's usually a setup.py file in the main library folder. I've been ignoring this. Should I be using it?
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