1. Number Data Type
2 container data type - String
""" grammar: "String"% (value 1, value 2, ...) Placeholder: % D integer placeholder % F float placeholder % S string placeholder """ # % D integer placeholder strvar = " Zouyong Ling hair haggard, because they have bought the% d inflatable doll last night " % (3 ) Print (strvar) # % 2d occupy two original characters right home strvar = " Zouyong Ling hair haggard, because they have bought% 2d inflatable doll last night " % (3 ) Print (strvar) # % -2d occupy two original characters left strvar = " Zouyong Ling hair haggard, because they have bought% -2d last night inflatable doll " % (. 3 ) Print (strvar) # %f 浮点型占位符 默认小数位保留6位 strvar = "朱金城昨天开工资了,一共发了%f元" % (9.9) print(strvar) # %.2f 小数点保留两位 strvar = "朱金城昨天开工资了,一共发了%.2f元" % (9.9) print(strvar) # %s 字符串占位符 strvar = "%s" % ("易烊千玺") print(strvar) # 在不确定类型的情况下,统一用%s,这里会强制转化成字符串类型; strvar = "小李买了%s个特斯拉,花了%s元" % (5,9.9) # %f 存在四舍五入的情况 strvar = "小李买了%d个特斯拉,花了%.1f元" % (5,9.198) print(strvar)