字符串.replace()
phone_number='158-8888-8888'
hide_number=phone_number.replace(phone_number[:9],'*'*9)
字符串.format()
____a word she can get what she ____ for.
A.With B.came
'{}a word she can get what she{}for.'.formate('with','came')
'{0}a word she can get what she{1}for.'.formate('with','came')
'{prepostion}a word she can get what she{verb}for.'.formate(prepostion='with',vreb='came')
