字符串format函数使用

#format拼接字符串,format()内的参数必须为可迭代的对象
p1="i am {2},age {1},{0}".format("seven",18,'alex')
print(tp1)

tp1="i am {1},age {1}".format("seven",18,'alex')#按照元祖下标取值
print(tp1)

tp1="i am {name},age {age},really {name}".format(name="tang",age=20)#按照字典键去取值,name为字典键名
print(tp1)

tp1="i am {name},age {age},really {name}".format(**{"name":"seven","age":18})#**按照字典键去取值,name为字典键名
print(tp1)

print(
    help(format)
)