python中格式化语言

Question

最后一行，请问这里的格式化用f是什么意思，这个print(f"x:{x})又是指什么

Answer 1

用大括号 {} 表示被替换字段，其中直接填入替换内容：
参考链接：https://blog.csdn.net/lizhaoyi123/article/details/102731501

>>> name = 'Eric'
>>> f'Hello, my name is {name}'
'Hello, my name is Eric'

>>> number = 7
>>> f'My lucky number is {number}'
'My lucky number is 7'

>>> price = 19.99
>>> f'The price of this book is {price}'
'The price of this book is 19.99'

这里的print(f"x:{x})中，简单的说就是等效于 将变量x的值自动转换为str类型后将{x}替换，即：print(f"x:{x}) = print( "x:"+str(x) )