打印字符串里每个字符的个数 a = 'hello world' b = [] for i in a: if '%s:%s' % (i, a.count(i)) not in b: b.append('%s:%s' % (i, a.count(i))) print(b) ------- 知识无价,汗水有情,如需搬运请注明出处,谢谢!