Getting an unexpected generator object ?

[gontajones]

In fact c is the return of the integrate.quad() from scipy.integrate.quad.
And it returns a Tuple:

>>> c= integrate.quad(f,0,1)
>>> print(c)
(0.33333333333333337, 3.700743415417189e-15)

So you need to get the first element of this tuple (index=0) to get only the integral of function f.

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BTW I'm just checking the code...not the math!