Python f-stringis a powerful and flexible string formatting method introduced in Python 3.6. Unlike older formatting techniques such as%-based formatting andstr.format(), f-strings are faster, more readable, and
Master Python's f-strings, the most elegant way to handle string formatting in your code. This guide covers everything from basic syntax to advanced techniques. Learn how to write cleaner, more maintainable code with real-world examples. ...
不过 f-string 并不能完全替代 str.format。本文也将列举出这两者并不通用的情况。 2、基本的字符串格式化 如上文所述,使用f-string格式化字符串十分简单。唯一的要求就是给它一个有效的表达式。f-string 也可以用大写F开头或者与 r 原始字符串结合使用。但是你不能将其与 b”” 或者 ”u” 混用。 book =...
Format specifiersfortypes, padding,oraligning are specified after the colon character;forinstance: f'{price:.3}', where priceisa variable name. Python string formatting The following example summarizes string formatting optionsinPython.#!/usr/bin/pythonname='Peter'age= 23print('%s is %d years ol...
Python String Formatting : Basic formatting, Padding and aligning strings, Truncating long strings, Combining truncating and padding, Numbers, Padding numbers, Signed numbers, Named placeholders, Datetime.
String formatting in Python involves inserting and formatting values within strings using interpolation. Python supports different types of string formatting, including f-strings, the .format() method, and the modulo operator (%). F-strings are generally the most readable and efficient option for ...
要使用格式化字符串文字,请在左引号或三引号之前以 f 或 F 开始字符串。 字符串的 format() 方法可帮助用户创建更精美的输出。 用户可以通过使用字符串切片和连接操作来完成所有字符串处理,以创建用户想要的任何布局。 string 类型有一些方法可以执行有用的操作,将字符串填充到给定的列宽。
String formatting with format() As numbers, string can be formatted in a similar way withformat(). Example 6: String formatting with padding and alignment # string padding with left alignmentprint("{:5}".format("cat"))# string padding with right alignmentprint("{:>5}".format("cat"))#...
Python's string formatting syntax allows us to inject objects (often other strings) into our strings. >>>name="Trey">>>print(f"My name is{name}. What's your name?")My name is Trey. What's your name? We can even embed expressions: ...
语法格式:f'{expression[:format-spicifier]}' 说明:类似于r'string'、b'byte sequence'的风格,f也可以是大写的F,表达式expression可以是直接量、变量,对象属性,函数调用、模块方法执行等,还可以结合!s或!r对表示执行str或repr函数。格式化说明符可以省略。