python的占位符怎么用,python中字符串输出

iwanttobeabletouseaplaceholderinastringthatalreadycontainsa % symbol.for instance，iwouldliketobeabletoiteratetooopenmultipenmultipltipltiplentiple

33558 www.example.com/blabla3blabla page=1

To do so，iwanttoreplacethenumber1bya placeholder (% d )，butthecodeseemstobeconfusedbythepresenceofthe % thatcomesbeforethetheplepleplthe

解决方案

You can escape % by doubling it:

' http://www.example.com/blabla； lablapage=%d'%(1，)

' http://www.example.com/blabla3blabla page=1'

Alternatively，use str.format () formatting instead:

' http://www.example.com/blabla3blabla page={ : d } '.format (1) )。

' http://www.example.com/blabla3blabla page=1'