如何分别从字符串中检索最后两条数据？

Question

This code retrieves the last two odds fluctuations for a particular runner in a race. I want to retrieve the last two fluctuations, but I want to retrieve them individually.

flucs2 = flucs1[-2:] retrieves the last two fluctuations, but not individually.

flucs2 = flucs1[-1:] retrieves the last fluctuation individually

What do I use to retrieve the second last fluctuation individually?

My code:

request2 = requests.get('https://www.punters.com.au/api/web/public/Odds/getOddsComparisonCacheable/?allowGet=true&APIKey=65d5a3e79fcd603b3845f0dc7c2437f0&eventId=1051322&betType=FixedWin', headers={'User-Agent': 'Mozilla/5.0'}) 
json2 = request2.json()
data = []
for selection in json2['selections']:
    for fluc in selection['flucs'][0]:
        flucs1 = ast.literal_eval(selection['flucs'])
        flucs2 = flucs1[-2:]

Answer 1

Using negative indexing will count from the back so -1 is the last item, -2 is the second last item etc. You don't need to splice with : to get just one item:

>>> list = ["one", "two", "three", "four"]
>>> list[-1]
'four'
>>> list[-2]
'three'