fmt包  

type 用来检测数据类型 num = 1 print(type(num)) 格式化占位符 name = \'fdas\' num = 1 print(\'wds=%s, dfd=%06d\' % (name, num)) b = 2.325 print(\'fsda%.7f\' % b) print(\"wdw%%fwe%%\" %()) wdw%fwe% name = \'fdfd\' age = 324 pri