摘要: # v = 11# data = v.bit_length()# print(data)# a = 'ABCDEFGHIJK'# print(a[0])# print(a[10])# print(a[0:3]) 0,1,2三位# print(a[2:3]) #从下标为2开始,到下标3但不包含3# p 阅读全文
posted @ 2019-03-05 20:38 Frank流云 阅读(494) 评论(0) 推荐(0)