Question

I have two lists that I am trying to compare with < or > in python.

One (list1) is a slope and then a horizontal line (picture a obtuse angle of around 130 degrees) the second is a linear function with a negative slope that I calculated from the first list (list2). What I would like to do is compare the two lists list1 and list2 and create a new list3 where list3 = all the points in list1>list2. I am having trouble determining how to approach this. I have attempted list comprehension but I get the error

ValueError: The truth value of an array with more than one element is ambiguous.

v = [c for c in f if c > y]
list1= [0.0, 0.36, 0.34, 0.32, 0.32, 0.3, 0.3, 0.28, 0.28, 0.26, 0.26, 0.24, 0.24, 0.22, 0.22, 0.2, 0.2, 0.18, 0.18, 0.16, 0.16, 0.14, 0.14, 0.12, 0.12, 0.1, 0.1, 0.08, 0.08, 0.06, 0.06, 0.04, 0.04, 0.02, 0.02, 0.0,..., 0.0]
list2= [ 0.36  0.35  0.34 ..., -9.62 -9.63 -9.64]

Any help, advice, or guidance would be greatly appreciated. Also please let me know if my question is unclear in anyway.

Answer 1

If you mean that list3 is the collection of values from list1 where the corresponding value in list2 is smaller, then:

list3 = [item1 for item1, item2 in zip(list1, list2) if item1 > item2]