请参阅https://docs.python.org/3/library/string.html?highlight=curly: Format strings contain"replacement fields" surrounded by curly braces {}. Anything that is not contained in braces is considered literal text,
Also called “formatted string literals,” f-strings are string literals that have an f at the beginning and curly braces containing expressions that will be replaced with their values. The expressions are evaluated at runtime and then formatted using the __format__ protocol. As always, the P...
Python with braces. Because Python is awesome, but whitespace is awful. Bython is a Python preprosessor which translates curly brackets into indentation. Content of README: Key features Code example Installation Quick intro Structure of the repository ...
To create a string with an f-string literal, you must prepend the literal with an f or F letter. F-strings let you interpolate values into replacement fields in your string literal. You create these fields using curly brackets.Here’s a quick example of an f-string literal:...
Alternately, a set can be defined with curly braces ({}): #第二种生成方式,是大括号括起来的对象。 x={<obj>,<obj>,...,<obj>} When a set is defined this way, each<obj>becomes a distinct element of the set, even if it is an iterable. This behavior is similar to that of the....
As we can see from the output, the f-string correctly handles both escaped and unescaped curly braces. The text"{a} is fun!"is included as-is, while"{programming}"is replaced with the value of the variablea, resulting in the string"programming is also fun!". ...
>>>spam=42>>>f'This prints the value in spam: {spam}''This prints the value in spam: 42'>>>f'This prints literal curly braces: {{spam}}''This prints literal curly braces: {spam}' 因为您可以将变量名和表达式内联到字符串中,所以您的代码比使用旧的字符串格式化方法更具可读性。
键值对：键是数据索引的扩展字典是键值对的集合，键值对之间无序采用大括号0和dict()创建，键值对用冒号：表示Key-value pairs: Keys are extensions of data indexesA dictionary is a collection of key-value pairs that are unordered between key-value pairsCreated with curly braces 0 and dict(), key-...
>>>spam =42>>>f'This prints the value in spam:{spam}''This prints the value in spam: 42'>>>f'This prints literal curly braces: {{spam}}''This prints literal curly braces: {spam}' 因为您可以将变量名和表达式内联到字符串中,所以您的代码比使用旧的字符串格式化方法更具可读性。
), and escaping curly braces with a backslash are still in place. To use colons (:) and exclamation points (!) for a purpose other than string formatting, you need to surround the expression containing either of these symbols with a pair of parentheses. Otherwise, the f-string won’t ...