how to Subtract 2 lists .

Question

eg. a=[3,4,5,7,8,3] - b=[3,4,5,7] (need a simple way)

Answer 1

What do you mean by subtraction? Can you tell what is the expected output?

Answer 2

while b:
x = b.pop()
if x in a:
a.remove(x)

# now `a` is your desired output

Edit: do you need a code snippet or is this sufficient?

Answer 3

a = [3,4,5,6]
b = [3, 4]
print([i for i in a if i not in b])
#5 6
import numpy as np
a = np.array([3,4,5,6])
b = np.array([1,2,3,4])
print(a - b)
#2 2 2 2

Answer 4

[8,3]