Mark Dickinson <[email protected]> added the comment:
When you do:
FINUB = np.empty(len(close))
FINLB = np.empty(len(close))
you're creating two *uninitialised* arrays of values. (See the NumPy
documentation at
https://numpy.org/doc/stable/reference/generated/numpy.empty.html.)
When you then do
FINUB[i] = UB[i] if UB[i] < FINUB[i-1] \
and close[i-1] > FINUB[i] else FINUB[i-1]
on the first iteration of the loop (i = 1), you make use of the (undefined)
value in FINUB[0] to compute FINUB[1].
In other words, this is a bug in your code, rather than in Python or NumPy.
----------
nosy: +mark.dickinson
resolution: -> not a bug
stage: -> resolved
status: open -> closed
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Python tracker <[email protected]>
<https://bugs.python.org/issue46199>
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