# 数据格式化
name = "lucy"
age = 18
sex = "woman"
str_1 = f"name:{name} age:{age} sex:{sex}"
str_2 = "name:%s age:%d sex:%s" %(name, age, sex)
str_3 = "name:{} age:{}".format(name, age)
print(str_1)
print(str_2)
print(str_3)
输出结果：
name:lucy age:18 sex:woman name:lucy age:18 sex:woman name:lucy age:18
