字元串轉清單_1
s = 'abc'
s = list(s)
字元串轉清單_2
s = 'a b c'
s = s.split(' ')
清單轉字元串
s = ['a', 'b', 'c']
s = ''.join(s)
清單str轉int_1
s = ['1','2','3']
s = list(map(int,s))
清單str轉int_2
s = ['1','2','3']
s = [int(x) for x in s] #python的清單生成式