比较列表的对应元素

Question

I am trying to perform a simple comparison between 2 lists. How do I compare one elements from list A to the corresponding element of list B? Lets say I have 2 lists.

A = [100,100,100]

B = [100,120,95]

I want to compare lists A and B (A[1] with B[1], A[2] with B[2] and so on).

A = [100,100,100]
B = [100,120,95]

if A <= B:
    print("A is less than or equal to B")
else:
    print("A is not less than B")

I expect "A is not less than B" to be the output but it prints "A is less than or equal to B" which is not correct. Please help!

Answer 1

Function zip will generate for you pairs of elements:

>>> print(list(zip(A, B)))
[(100, 100), (100, 120), (100, 95)]

Now you can run an easy pairwise comparison using a list comprehension :

>>> [a > b for (a, b) in zip(A, B)]
[False, False, True]

Now you easily can check whether the comparison holds for every element:

>>> all(a > b for (a, b) in zip(A, B))
False

I hope this helps.