Why is there difference between cmd line and .py file?

[John Gordon]

In <e9f1d94f-4dd6-49b5-bf5c-bbcdc8d304e8 at googlegroups.com> Robert <rxjwg98 at gmail.com> writes:

> ////////////
> # represent the experiments
> head_counts = np.array([5,9,8,4,7])

The code doesn't define 'np', so this line should produce an error.

The code you linked contains this import:

    import numpy as np

However you didn't show it here, so I wonder if you posted the real code.

> sum(expectation_A)[0]
> ---------------------------------------------------------------------------
> IndexError                                Traceback (most recent call last)
> <ipython-input-145-d6f33dff0343> in <module>()
> ----> 1 sum(expectation_A)[0]

> IndexError: invalid index to scalar variable. 
> //////////////

The built-in function sum() returns a single value, not a list, so this
is a reasonable error.

I suspect the code actually intended to call numpy.sum(), which does
return a list (or something like a list).

-- 
John Gordon                   A is for Amy, who fell down the stairs
gordon at panix.com              B is for Basil, assaulted by bears
                                -- Edward Gorey, "The Gashlycrumb Tinies"