Python中用户输入一个整数n将hello world从左开始一次打印输出,每次n...答:def fun(num, txt = 'hello world', sep = ', '): temp = '' for i, v in enumerate(txt): temp += v if((i + 1) % num == 0): temp += sep return tempprint(fun(1)) # h, e, l, l, o, , w, o, r, l, d,print(fun(2)) # he, ll...
python怎么获取list的某个元素的位置答:listA = [100, 94, 88, 82, 76, 70, 64, 58, 52, 46, 40, 34,76]print('列表中第1次出现的位置 = ',listA.index(76))2)a_list = ['a','b','c','c','d','c']find = 'c'print('重复元素出现的位置索引分别是 = ',[i for i,v in enumerate(a_list) if v==...