a = "1" b_name = "小牛牛" # 用 %s 代替一个参数 s 是字符串str的意思. print("my name is %s" %b_name) print("my name is %s and my age is %s years old." % (b_name, a)) # my name is 小牛牛 and my age is 1 years old # 用format 方法 # {}不设置指定位置, 按默认顺序 print("my name is {} and my age is {} years old".format(b_name, a)) # my name is 小牛牛 and my age is 1 years old # 设置位置 print("my name is {1} and my age is {0} years old".format(a, b_name)) # my name is 小牛牛 and my age is 1 years old