#n为算式的结果， eval()可以将字符串算式转化为算式结果 def draw(n):     lib = ["66666", "6...6", "....6", "6...."]     dic = {}     target = str(n)     length = len(target)     res = ""     dic[0] = [0,1,1,1,0]     dic[1] = [2,2,2,2,2]     dic[2] = [0,2,0,3,0]     dic[3] = [0,2,0,2,0]     dic[4] = [1,1,0,2,2]     dic[5] = [0,3,0,2,0]     dic[6] = [0,3,0,1,0]     dic[7] = [0,2,2,2,2]     dic[8] = [0,1,0,1,0]     dic[9] = [0,1,0,2,0]     for i in range(5):         for j in range(length):             num = int(target[j])             if j<length-1:                 res += lib[dic[num][i]]+".."             else:                 res += lib[dic[num][i]]         print(res)         res = ""