Is that what you want?
INPUT_COUNT = 8
FIRST_INPUTS = []
SECOND_INPUTS = []
for _ in range(INPUT_COUNT):
result = input().split()
try:
FIRST_INPUTS.append(float(result[0]))
SECOND_INPUTS.append(float(result[1]))
except IndexError:
pass
solved Extracting user input in 2 different arrays